Abstract
Following a manufacturer's large product recall, its supplier's shareholders may perceive uncertain future demand for the supplier's products and react punitively, causing a drop in the supplier's stock return—that is, a contagion (or negative spillover). Moreover, shareholders’ information asymmetry may cause them to “screen” the supplier's information cues to determine the supplier's extent of demand uncertainty. The ideal screen is the supplier's proportion of sales revenue from the recalling manufacturer. However, not all suppliers disclose this information. Therefore, we propose that shareholders use a two-stage screening. The first screen is whether the supplier demonstrates transparency by voluntarily disclosing information about its customer portfolio. The second screen—available only to the subset of suppliers that disclose customer information—is the supplier's sales revenue from the recalling manufacturer. We used a sample of 896 U.S. public manufacturer–supplier dyads impacted by 27 large manufacturer recalls. An event study followed by cross-sectional regressions provides evidence of contagion. In addition, it reveals that the supplier's voluntary disclosure of customer information mitigates contagion, whereas revenue dependence aggravates it. Contextual (i.e., recall) variables also impact contagion. Our research study contributes to the supply-chain contagion literature, screening theory, and customer information disclosure literature. The findings inform supplier firm managers that their prior customer-related disclosures and the contextual variables can moderate contagion.
Introduction
Manufacturer–supplier relations are intertwined (e.g., Astvansh and Jindal, 2022; Hertzel et al., 2008). A supplier may become more prosperous because of a manufacturer's success (e.g., Li and Simcoe, 2021; Van Everdingen et al., 2009) but also suffer steep losses resulting from the manufacturer's failure (e.g., Hertzel et al., 2008; Kolay et al., 2016). For example, the manufacturer's product recall—notably a large one—can spur a sharp, near-term drop in the demand for the manufacturer's products (Borah and Tellis, 2016; Giannetti and Srinivasan, 2021; Liu and Shankar, 2015) and, by extension, forecast uncertain demand for the supplier's products. This demand uncertainty can translate into a drop in the supplier's imminent cash flow. Anticipating this uncertainty, the supplier's shareholders would likely drive down its stock price. Thus, a manufacturer's recall likely causes a contagion (or negative spillover) on the supplier's shareholder value (Fang et al., 2025). Unsurprisingly, the supplier's managers would want to know which prior customer-related disclosures may influence shareholders’ perceptions of demand uncertainty, thus mitigating or aggravating their punitive reactions. Our research answers this question.
We reason that the supplier's shareholders attempt to resolve their uncertainty about the demand for the supplier's products by “screening” for supplier-provided “cues” about its customers (Connelly et al., 2021). Thus, we rely on screening theory 1 (Stiglitz, 1975; Zhang et al., 2023) to explore a supplier's prior (i.e., in the pre-recall period) information cues that may lower its shareholders’ perceived demand uncertainty.
The ideal screen provides information about the supplier's dependence on the recalling manufacturer-customer for sales revenue. However, this information is often unavailable. Specifically, the U.S. federal law requires a U.S. public firm to disclose revenue from and the name of a customer that contributed at least 10% of the supplier's annual sales revenue (i.e., the customer is “major”). Further, the law states that the firm's disclosure of a “minor” customer's information is voluntary. Interestingly, the Financial Accounting Standards Board (FASB) states that the supplier's disclosure of major customers’ information is voluntary (Web Appendix A quotes the law and the FASB). Prior research has shown that many firms do not disclose customer information, and the U.S. Securities and Exchange Commission (SEC) has never taken disciplinary action in response to such law violations (e.g., Ellis et al., 2012). Therefore, the supplier's shareholders often cannot find information about the supplier's revenue dependence on the recalling manufacturer-customer.
We reason that the supplier's shareholders overcome the unavailability of their preferred screen by undertaking a two-stage screening. First, they check whether the supplier voluntarily disclosed customer information by going beyond legal requirements and accounting standards. The intuition is that the supplier's voluntary disclosure of customer information assuages shareholders’ perceived demand uncertainty after the manufacturer's recall, thereby mitigating their punitive reactions. Second, in cases where the supplier discloses customer information, shareholders screen the supplier's revenue dependence on the recalling manufacturer. The intuition is that the higher the supplier's dependence, the greater the shareholders’ perceived demand uncertainty and, thus, the more punitive their reactions.
Furthermore, the contextual recall variables may serve as a shareholder screen (Connelly et al., 2021; Qian et al., 2021). Prior research on shareholder reactions to automotive recalls (e.g., Eilert et al., 2017; Mukherjee et al., 2022a) has identified recall severity as the most relevant shareholder screen because it directly ties to customer demand for the recalled product and its components. Therefore, we follow this research to consider an exhaustive set of five proxies of recall severity: recall size, recall news volume, recall news sentiment, customer harm, and software (vs. non-software) recall (Astvansh and Eshghi, 2023; Astvansh et al., 2024c).
We test our conjectures in the context of 896 U.S. public manufacturer–supplier dyads affected by 28 large recalls announced by 11 manufacturers, which contracted with 46 suppliers. Following recall research in operations management (e.g., Mukherjee et al., 2022a; Thirumalai and Sinha, 2011) and marketing (e.g., Chen et al., 2009; Liu et al., 2017), we measure a supplier's shareholders reactions by the supplier's cumulative abnormal stock return (CAR) surrounding on the date of the manufacturer's recall. Next, we estimate two cross-sectional regressions. The first one regresses the supplier's CAR on whether the supplier voluntarily disclosed customer information in the year immediately preceding the recall year and on recall severity proxies. The second regression—estimated on the subsample of suppliers who disclosed their sales revenue from the recalling manufacturer—regresses the CAR on the supplier's revenue dependence (Jacobs and Singhal, 2020; Jacobs et al., 2022; Qiu et al., 2024).
The event study reports that, on average, a manufacturer-customer's large recall causes its supplier's stock returns to drop by 0.40%. Thus, evidence supports supply-chain contagion from recalls. Next, the first cross-sectional regression reports that shareholders are less punitive toward suppliers that disclosed (vs. those that did not disclose) customer information in the year before the recall year. Contextual variables—specifically, recall size, recall news volume, and recall news sentiment—are also associated with shareholder reactions. The second cross-sectional regression reports that the higher the supplier's revenue dependence on the recalling customer, the more punitive the shareholders’ reaction. Thus, the second screen also reduces shareholders’ uncertainty, albeit in an unfavorable direction for the supplier, because it increases the likelihood of a greater loss in demand.
As we elaborate in the discussion section, our findings contribute to (1) supply-chain contagion literature, (2) screening theory, and (3) customer information disclosure literature. First, we extend the supply-chain contagion literature (see Table B1 in Web Appendix B) by documenting that a supplier's prior customer-related disclosures and recall-related contextual variables can influence shareholders’ uncertainty and, by extension, their punitive reactions. These findings also inform the recall literature, which shows that a recall's consequences can propagate through the supply chain (Astvansh et al., 2024a, 2024b; Cleeren et al., 2017). Second, we contribute to screening theory by proposing a two-stage screening procedure when shareholders’ ideal screen is unavailable and demonstrating that the screens in the two stages impact their reactions asymmetrically. Third, we expand the sparse literature on how customer information disclosure affects a firm's shareholder value (Ellis et al., 2012; He et al., 2020). We show the double-edged nature of this disclosure in the context of a recall's supply-chain contagion.
Our findings advise supplier firms’ managers on managing shared supply-chain contagion. On the one hand, anticipating potential supply-chain contagion, the supplier's managers may highlight their firm's customer information disclosure to assuage shareholders’ perceptions that the manufacturer's recall may hurt the demand for the supplier's products. On the other hand, our findings alert managers to the disclosure's potential downside because it reveals revenue dependence on a recalling manufacturer whose product demand is likely to drop significantly. Further, our findings show that suppliers that decide not to disclose customer information can rely on firm- and recall-specific characteristics to mitigate supply-chain contagion.
Conceptual Framework
Shareholders’ Two-Stage Screening to Mitigate Demand Uncertainty
Information asymmetry “arises between those who hold information and those who could make better decisions if they had it” (Qian et al., 2021: 529). In our context, a supplier to a recalling manufacturer holds private information about its customer portfolio. This information is unavailable to the supplier's shareholders. The shareholders’ need for this information becomes salient when a manufacturer-customer issues a large recall. Prior research has shown that a large recall is likely to cause a sharp and immediate decline in the demand for (1) the recalled product (Cleeren et al., 2013; Liu and Shankar, 2015), (2) the manufacturer's non-recalled products (Giannetti and Srinivasan, 2021; Liu and Shankar, 2015), and (3) other products in the focal product category (Borah and Tellis, 2016). This evidence provides the supplier's shareholders with a reason to interpret/assume that the manufacturer's recall increases the uncertainty surrounding demand for the supplier's products. The increase in shareholders’ perceived demand uncertainty prompts them to infer that the supplier's future cash flows are at risk. The inference drives down the supplier's stock price (Chen et al., 2009; Liu et al., 2017). The customer recall's negative effect on the supplier's shareholder value is called contagion (or negative spillover). Table B1 in Web Appendix B summarizes the supply-chain contagion literature.
The supplier's shareholders may reduce their perceived demand uncertainty by screening the supplier-provided information cues about its customer portfolio, and by extension, the demand for its products (Connelly et al., 2021; Spence, 1974; Stiglitz, 1975). In our substantive context, screening refers to the supplier's shareholders using the supplier's observable cues to determine the level of demand uncertainty the supplier may face due to its manufacturer-customer's recall (Panagopoulos et al., 2018).
The ideal screen is the supplier's dependence on the recalling manufacturer-customer for sales revenue (Jacobs et al., 2022; Jacobs and Singhal, 2020; Qiu et al., 2024). The higher the supplier's revenue dependence on the recalling customer, the greater the proportion of a supplier's cash flows exposed to risk. Therefore, dependence should aggravate shareholders’ punitive reactions. However, publicly listed firms in the United States do not necessarily report their sales revenue from customers (see Web Appendix A). Therefore, the supplier's shareholders cannot rely solely on the revenue-dependence screen.
We propose that shareholders adopt a two-stage screening process to circumvent the unavailability of the revenue dependence cue. The first stage involves determining whether the focal supplier disclosed customer information in the year before the recall year. If the answer is affirmative, shareholders proceed to the second stage, using the supplier's revenue screen to assess the recalling customer's dependence on the supplier. More concretely, shareholders consider the proportion of annual sales revenue the supplier received from the recalling manufacturer-customer.
Stage 1: Supplier's Voluntary Disclosure of Customer Information
A supplier may voluntarily disclose proprietary information about its customer portfolio if the anticipated benefits of disclosure outweigh its anticipated costs (Ellis et al., 2012; He et al., 2020). Disclosure benefits involve reducing shareholders’ information asymmetry (Bayer et al., 2017) and, in turn, fostering favorable perceptions (Li, 2010; Ling et al., 2020). Shareholders of a disclosing supplier may screen for its voluntary disclosure of customer information and thus become aware of its alternatives to the recalling manufacturer-customer. Consequently, they can more precisely estimate the supplier's demand uncertainty triggered by the manufacturer's recall, leading them to react less punitively. However, the disclosed information is also available to the firm's rivals, who may learn about the supplier's customers and poach them, resulting in a decline in the supplier's sales revenue (Bayer et al., 2017). This plausibility leads the firm to anticipate the disclosure's proprietary costs.
We acknowledge the possibility that shareholders may interpret the disclosure as managerial overconfidence and fear that it may cause rivals to poach customers, thereby inducing greater (rather than lesser) demand uncertainty. Should this interpretation prevail, shareholders may react more punitively when the supplier voluntarily discloses customer portfolio information.
Stage 2: Supplier's Revenue Dependence on the Recalling Manufacturer-Customer
The contagion literature suggests that the extent to which a recall's costs propagate to a supplier is a function of the supplier's level of dependence on the recalling manufacturer-customer (Pfeffer and Salancik, 1978). The three factors of (1) importance, (2) discretion, and (3) number of alternatives, which compose resource dependence (Pfeffer and Salancik, 1978), suggest that revenue dependence is a diagnostic screen for the supplier's shareholders when a manufacturer-customer issues a large recall. First, the supplier relies on its manufacturer-customers for revenue, a critical resource that defines the supplier's ability to survive and grow (Heide and John, 1988). Second, customers have discretion over which suppliers they form relations with and whose contracts they terminate when faced with financial difficulties (Maitland et al., 1985; Wathne and Heide, 2000). Third, a customer that contributes a larger revenue share for the supplier is more difficult to replace than a smaller customer (Casciaro and Piskorski, 2005; Emerson, 1962). Thus, the greater the supplier's revenue dependence on the recalling customer, the more uncertain the demand for the supplier's products. Thus, revenue dependence may exacerbate shareholders’ punitive reactions.
Recall Context's Effect on Shareholder Reactions
Shareholders may also look up the “contextual variables” as a screen. Therefore, we consider recall severity—the most relevant recall variable—as a shareholder screen (Cleeren et al., 2017; Gao et al., 2015; Liu and Shankar, 2015).
Recall severity is multifaceted (Cleeren et al., 2017). Thus, we focus on five recall variables that shareholders may use to mitigate their perceived uncertainty. First, we examine recall size, defined as the number of affected products (Gao et al., 2015). A larger recall typically signals a broader customer reach, increasing the potential impact on brand reputation and product-market performance. Second, we examine the extent of the recall's news volume (Borah and Tellis, 2016; Liu and Shankar, 2015). News media exposure amplifies recall visibility, intensifying its deleterious effects on customers and shareholders. Third, we consider the news sentiment. Negative media portrayals amplify reputational damage, leading to more punitive shareholder reactions (Tetlock, 2007). Fourth, we also account for customer harm (Chakravarty et al., 2022), as recalls linked to bodily injury or death can significantly undermine customer trust and erode shareholder confidence. Fifth, we examine the effect of software-related defects to account for cases where the recall is relatively simple to address (e.g., upgrading) compared to nonsoftware-related defects.
Data and Method
Data
Measuring recalls’ contagion from a manufacturer-customer to a supplier requires an empirical setting in which manufacturers and suppliers are interdependent in the product market (Cho et al., 2021). The automotive industry meets this requirement because suppliers produce 70% of an automobile, on average (McGee, 2017), suggesting high interdependence.
An automotive supplier's shareholders may expect recalls to be frequent events (Astvansh et al., 2022a; Crouch et al., 2020; Stout, 2019). Consequently, a manufacturer's recall that affects a few automobiles will elicit little or no reaction from the supplier's shareholders (Jarrell and Peltzman, 1985). Indeed, many automobile recall studies sample “large” recalls (e.g., Gao et al., 2015; Giannetti and Srinivasan, 2021; Hoffer et al., 1988; Jarrell and Peltzman, 1985; Javadinia et al., 2023; Liu and Varki, 2021; Pupovac et al., 2022). Consistent with these precedents, we sample large recalls, defined as those affecting at least 1 million vehicles (Beattie et al., 2021). These recalls are large enough to attract the attention of the supplier's shareholders and frequent enough to create uncertainty about demand for the supplier's products.
We assembled our sample in three steps. (1) We identified large recalls announced by automobile manufacturers. (2) We found automotive suppliers listed on the major U.S. stock exchanges. (3) Not all automotive suppliers sell their parts/components to every manufacturer. Therefore, for each recall from Step #1, we matched suppliers from Step #2 to the recalling manufacturer. We describe each step next.
First, following prior event study research on automotive recalls (Astvansh and Eshghi, 2023; Liu et al., 2017; Liu and Varki, 2021), we searched Factiva, Google, The Wall Street Journal, and Automotive News, using keywords such as “product recall,” “automobiles recall,” “car recall,” “[name of 10 largest automobile manufacturers] recalled,” and “largest recalls in the automobile/car/automotive industry.” This search yielded 27 recalls affecting 1 million or more vehicles (see Table C1 in Web Appendix C) announced between 2010 and 2016. 2 Eleven manufacturers announced these 27 recalls. Some recalls were announced on the same day or within a few days. Following Warren and Sorescu's (2017) recommendation, we do not remove such recalls. Concretely, we treat all recalls announced within three days of one another and affecting the same supplier as a single event (as detailed subsequently, we use a three-day [−1, 1] event window), using the earliest recall as the focal event. As detailed subsequently, results are robust to excluding recall events falling within the same three-day window [−1, 1].
Second, we used several sources to identify the population of automotive suppliers. We start with the list of suppliers in the SIC code 3714 (“Motor Vehicle Parts and Accessories”) (Jacobs and Singhal, 2020). We reviewed automobile manufacturers’ websites and searched The Wall Street Journal, Financial Times, and Automotive News for news about manufacturer–supplier relations. Publicly available third-party sources, including the PricewaterhouseCoopers’ list, also indicate the largest suppliers in the automotive industry. 3 We identified which suppliers are listed on the New York Stock Exchange or the Nasdaq Stock Market. This procedure led us to 46 automotive suppliers whose common stock is publicly traded in the United States.
Third, we matched a recalling manufacturer with its suppliers by reading their annual reports and websites, as well as external sources listed in Step #2. Next, we searched Factiva for the supplier's and the manufacturer's names to find mentions of their relations (e.g., “Magna Ford,” “Magna GM,” and “Magna Toyota”). 4 After this matching step, we obtained 896 recall-specific distinct manufacturer–supplier dyads, which we use to measure a manufacturer's recall's impact on a supplier's shareholders’ reactions. The first of our two regressions uses these 896 observations to determine whether a supplier's voluntary disclosure of customer information affects shareholders’ reactions to a manufacturer-customer's recall. Not all suppliers disclose information about their sales revenue from manufacturer-customers (Jacobs and Singhal, 2020). Therefore, our second regression (after controlling for potential sample-selection bias) uses a subsample of 223 observations to test the effect of the supplier's revenue dependence on its shareholders’ reactions to the manufacturer-customer's recall. Each regression controls for firm- and recall-specific covariates.
Event Study
We use the event study method (Ba et al., 2013; Hendricks and Singhal, 2003) to measure a supplier's shareholders’ short-term reaction to a manufacturer-customer's large recall. Specifically, we calculate a supplier's abnormal stock return to a manufacturer's recall event. The abnormal return is the observed/actual return minus the expected return. We use the market model to calculate the expected return in four steps (Eshghi and Astvansh, 2024; Sorescu et al., 2017).
First, we regress the supplier s's pre-recall return on the market pre-recall return to obtain values for
Rs,d is the stock return on the supplier s's common stock on day d, and Rm,d is the return of a value-weighted market index m on day d. We use a period of 240 days (ranging from 250 days before the recall to 10 days before the recall; that is, [−250, −10]) to estimate the supplier's stock return (Koval et al., 2024). This window is long enough to estimate the parameters
Second, we use
Third, we calculate the abnormal return (AR) as the actual return on the day minus the expected return on the same day:
Fourth, the cumulative AR (CAR) in the event window [d1, d2] is
We discuss below our study's outcome and explanatory variables. Table C2 in Web Appendix C lists all variables in our regression, their measures, and data sources.
We leverage this voluntariness to reason that following a large recall by a focal supplier's manufacturer-customer, the supplier's shareholders examine whether the supplier voluntarily disclosed customer information, specifically, (1) major customers’ names and (2) sales revenue it received from nonmajor customers and the names of such customers. Assuming a manufacturer's recall in year y, we set the supplier's voluntary disclosure (of customer information) to 1 if it disclosed the customer information in year y − 1, and 0 otherwise.
Regression Specification
We estimate equations (5) and (6) below.
Multiple suppliers can supply to a manufacturer. Therefore, we estimate supplier-clustered standard errors. This clustering estimates coefficients that are robust to (1) within-supplier correlations (i.e., equivalent to random effects) and (2) heteroscedasticity (Eilert et al., 2017).
A supplier firm strategically decides whether to disclose customer information. Unobserved managerial characteristics (e.g., disclosure orientation) may be correlated with this decision and directly affect shareholders’ reactions. Omitting these characteristics makes the disclosure decision plausibly endogenous to our specification of shareholders’ reactions. We control for the disclosure decision's endogeneity using the control function (CF) method (Lu et al., 2018; Petrin and Train, 2010) because the “approach is better suited for addressing endogeneity for a non-continuous (independent) variable” (Papies et al., 2017: 589). We also present the estimates without endogeneity control.
The first stage of the CF method uses the logit model to regress the disclosure decision on covariates listed in Table C2. The first-stage logit regression also includes a variable, which is excluded from the second-stage regression (conceptually, an instrument): a binary variable that equals 1 if a prominent U.S. news publisher reported on the focal supplier's business in the year of the disclosure and 0 otherwise. We reason that our excluded variable is likely relevant—that is, it is associated with the potentially endogenous variable of disclosure decision. Shareholders lack information about a firm (a supplier, in our context). A prominent news publisher's mentions of the firm attenuate the shareholders’ information asymmetry (e.g., Liu et al., 2017; Noack et al., 2019). Therefore, all else equal, a supplier covered by a prominent news organization has less incentive to reduce its shareholders’ information asymmetry by disclosing customer information (Merton, 1987). Conversely, a supplier that lacks prominent news media coverage has more reason to disclose customer information to reduce shareholders’ information asymmetry (Tourani-Rad and Kirkby, 2005). Therefore, we expect prominent news coverage to be negatively associated with the supplier's decision to voluntarily disclose customer information. Further, we reason that our instrument meets the exclusion restriction—that is, it is uncorrelated with unobserved determinants of the shareholders’ reactions. We reason so because the supplier's prominent media coverage occurred before the recall. Thus, the efficient market hypothesis (Malkiel and Fama, 1970) suggests that the coverage is known to the supplier's shareholders and factored into its stock price before the recall announcement.
Potential Selection Bias in the Subsample of Suppliers That Disclosed Revenue Dependence on the Recalling Manufacturer
Only a subsample of suppliers disclosed revenue dependence on the recalling manufacturer. Therefore, the subsample may be selective, thus biasing the estimated coefficients (Wooldridge, 2010). We control for this potential bias by estimating Heckman's (1979) two-stage selection model. The first-stage model is a binary probit regression of whether the focal supplier s reported the sales revenue it received from the recalling manufacturer m in year y − 1. The second stage explains the supplier's shareholders’ reactions, including the inverse Mills ratio (λ), computed from the first-stage regression coefficients.
The first-stage regression requires an excluded variable that affects the supplier's decision variable but not the outcome variable, shareholders’ reactions. Our exclusion variable equals 1 if the supplier is headquartered in the United States or Canada, and 0 otherwise. Prior research has reasoned that the U.S. and Canadian stock markets are more mature than those of other countries. Therefore, shareholders scrutinize firms headquartered in these two countries less than they scrutinize firms headquartered elsewhere (Ling et al., 2021; Nahata et al., 2014). By extension, suppliers headquartered outside the United States and Canada have a greater incentive to disclose their customer revenue, limiting shareholders’ perceived information disadvantage and promoting market transparency (Cashman et al., 2019; Chakrabarti et al., 2009). Therefore, the supplier's headquarters location should be associated with its decision to disclose sales revenue received from a manufacturer-customer, thereby meeting the relevance criterion. Further, the headquarters’ location should not be associated with the error term of the stock returns model for two reasons. First, relocating headquarters from one country to another is a resource-demanding process. Thus, managers cannot easily make such a decision and implement it. Second, the headquarters location should not be of primary concern for shareholders during recalls. Thus, on average, a manufacturer's recall should not cause shareholders to assess the supplier's future performance based on the supplier's headquarters country. We present results with and without Heckman's correction.
Results
Model-Free Results
Table C4 (Web Appendix C) reports our variables’ mean and standard deviation (SD). It also reports Pearson correlation coefficients between key variables.
The average value of suppliers’ cumulative abnormal stock returns to a manufacturer-customer's recall is 0.40% on the day of the announcement (t = −3.181, p < .01). The insight is that the supplier's shareholders react punitively to a manufacturer-customer's recall. Shareholders’ reactions are negative in the following five event windows: ([0, 1], [−1, 0], [−1, 1], [−2, 2], and [−5, 5]). They are significantly different from zero for [0, 1] (−0.39, t = −2.219, p < .05) and [−1, 0] (−0.33, t = −1.858, p < .10), suggesting significant contagion (or negative spillover) from the manufacturer to its supplier. These results support the efficient market hypothesis as suppliers’ shareholders react instantaneously to new and diagnostic information. In addition, the results suggest two key findings: (1) information leakage occurs a day before the manufacturer-customer announces the recall, and (2) shareholders continue to react a day after the announcement.
Supplier's Voluntary Disclosure of Customer Information → Suppliers’ CAR to a Manufacturer's Recall
Table 1's Column I reports the estimates from the regression that assumes the supplier's customer information disclosure is exogenous. Columns II and III present estimates from the control function method, which controls for the disclosure's potential endogeneity. Column II shows that being covered (vs. not) by a prominent U.S. news publisher is negatively associated with the supplier's voluntary disclosure of customer information (Column II: b = −0.747, p < .05). This finding is consistent with intuition and logic that coverage by a prominent news publisher attenuates the supplier's incentive to attenuate shareholder's information disadvantage by disclosing customer information. Thus, our instrument likely meets the relevance criterion.
Supplier's voluntary disclosure of customer information → shareholders’ reactions to a manufacturer–customer's product recall.
Supplier's voluntary disclosure of customer information → shareholders’ reactions to a manufacturer–customer's product recall.
Notes: Standard errors (SEs) are reported in parentheses. The regression for Column I uses SEs clustered by suppliers. The regressions for Columns II and III (i.e., control function) use SEs bootstrapped 500 times. CAR = cumulative abnormal stock return; FE = fixed effects.
***p < .01, **p < .05, *p < .1.
Columns I and III show that the supplier's voluntary disclosure positive affects CAR[−1,1] (Column I:
Next, we focus on five recall-specific regressors that proxy for recall severity and may thus serve as a shareholder screen. The coefficient estimates in Columns I and III carry the same sign and are similar in magnitude. Therefore, we report the estimates for Column III. Consistent with our intuition and prior research (e.g., Liu et al., 2017), recall size (bRecall size = b = −.792, p < .01) and recall news volume (bRecall news volume = −.432, p < .01) are negatively associated with shareholder reactions. However, contrary to our expectations and prior research (e.g., Noack et al., 2019), recall news sentiment (bRecalls news sentiment = −.133, p < .01) is negatively associated with shareholder reactions. In other words, the more positive the news, the more negative the shareholder reaction. We turned to signaling theory and recall literature to make sense of the seemingly counterintuitive negative sign. We found two explanations. Signaling theory suggests that signal inconsistency—for example, media using positive language to convey negative news—can confuse shareholders, increasing uncertainty and punitive reactions (Connelly et al., 2021). Product recall literature has revealed that news publishers may use milder language when reporting large recalls, thus maintaining relations with their corporate advertisers (Beattie et al., 2021). Shareholders may perceive favorable coverage of a large recall as an attempt to obscure negative news, reinforcing signal inconsistency and raising negative reactions.
Additionally, while customer harm exhibits the expected negative coefficient, the association does not reach statistical significance (bCustomer harm = −.657, p > .1), a finding consistent with prior research (Eilert et al., 2017). Finally, shareholders react less negatively to a software (vs. nonsoftware) recall (Column I: bSoftware recall = 2.375, p < .01), suggesting that shareholders are less punitive toward software defects, which can be addressed by less costly over-the-internet changes (Darby et al., 2023). Collectively, these results suggest that contextual variables (i.e., recall variables in our case) shape the supplier's shareholders’ perceived uncertainty, thus shaping their reactions. These characteristics are outside the supplier's managerial control. However, the evidence would help managers understand the contextual variables’ explanatory value in determining shareholder reactions.
Table 2 reports how the supplier's revenue dependence on the recalling manufacturer-customer impacts its shareholders’ reactions to the manufacturer's recall. Column I displays the results without the Heckman correction term's inclusion. Results suggest that the higher the supplier's dependence on the recalling manufacturer, the more negative the supplier's shareholders’ reactions to the recall (bRevenue dependence = −0.041, p < .05).
Supplier's revenue dependence on manufacturer → shareholders’ reactions to a manufacturer–customer's product recall.
Supplier's revenue dependence on manufacturer → shareholders’ reactions to a manufacturer–customer's product recall.
Notes: Standard errors (SEs) are reported in parentheses. The regression for Column I uses SEs clustered by suppliers. The regressions for Columns II and III (i.e., Heckman's two-stage model) use SEs bootstrapped 500 times. CAR = cumulative abnormal stock return; FE = fixed effects.
***p < .01, **p < .05, *p < .1.
Column II presents the estimates from the first-stage regression of Heckman's model. Consistent with our expectation, a supplier headquartered in the United States or Canada is less likely to disclose its dependence on the recalling manufacturer than a counterpart headquartered in other countries (bHQ in US/Canada = −0.387, p = .052). Thus, the excluded variable likely meets the relevance criterion. Statistical evidence suggests that the variable may also meet the exclusion restriction. Specifically, the pseudo-R2 of the first-stage regression is 43%, well above the 24% benchmark obtained by Certo et al.'s (2016) simulations to define a strong exclusion restriction. Additionally, the correlation coefficient between revenue dependence and the inverse Mills ratio (λ) is .05, exceeding Certo et al.'s (2016) benchmark of .30. In other words, the power of the test of λ is greater as the correlation between λ and the potentially endogenous explanatory variable is smaller. Despite a smaller subsample, the recall variables’ coefficients are similar to those in Table 1.
The supplier's customer depth's coefficient is positive and significant in the full-sample regression (Table 1:
Customer depth's, liquidity's, and size's coefficients’ significance in the full sample and insignificance in the subsample are consistent with screening theory, which posits that screens vary according to their strength (Gulati and Higgins, 2003). In our context, the supplier's revenue dependence on the manufacturer-customer is a strong screen for the supplier's shareholders, overshadowing weaker ones. Thus, shareholders strongly consider alternative screens, such as customer depth, liquidity, and size, when the revenue dependence screen is unobservable.
Robustness Tests
We undertake six robustness tests on the full sample and the subsample. (1) We treat year as a continuous variable because variance inflation factors in the full model exceed 10, mostly due to the correlation between year-fixed effects and some regressors (in that model, the maximum VIF is 5.1). (2) We include the manufacturer's reputation and market share covariates and use year as a continuous variable because adding two new covariates with year-fixed effects amplifies multicollinearity. (3) We measure abnormal return using the Fama-French model (Fama and French, 1993) instead of the market model. (4) We Winsorize the outcome variable at the 5th percentile to limit the influence of extreme values. (5) We exclude clustered recall events within the three-day window [−1, 1]. (6) We sample suppliers headquartered in the United States and Canada. The sign, magnitude, and significance levels of the estimated coefficients of the alternative samples and/or regressions are consistent with those reported in Tables 1 and 2. Columns 1.1–6.2 in Table D1 in Web Appendix D present the estimates.
Because the endogeneity correction term for the supplier's voluntary disclosure variable was significant (Table 1, Column III), we repeated all robustness tests related to the supplier's voluntary disclosure variable with the endogeneity correction, yielding similar results (Table D2 in Web Appendix D).
Discussion
Manufacturer–supplier relations are intertwined, particularly in product quality (Barnett and King, 2008; Hertzel et al., 2008; Yu et al., 2008). Therefore, intuition suggests that a manufacturer-customer's product recall—particularly, a large one—can raise uncertainty about the demand for the manufacturer's products and, by extension, the supplier's products (Freedman et al., 2012; Liu and Varki, 2021; Mukherjee et al., 2022a, 2022b; Zavyalova et al., 2012). The supplier's shareholders experience this uncertainty and bid down the supplier's stock price. Our post-hoc analysis reveals that a manufacturer's large recall can erase 1.15% of a supplier's shareholder value, 5 amounting to US$23 million for an average supplier in our sample. Further, an average manufacturer in our sample contracts with 33 suppliers, resulting in a substantial loss in suppliers’ cumulative shareholder value. The manufacturer-customer's recall's negative impact on a supplier's shareholder value (i.e., contagion or negative spillover) constitutes the starting point of our research. We invoke screening theory to propose the supplier's prior voluntary disclosure of customer information and recall contextual variables as screens that may moderate shareholders’ uncertainty and, by extension, their reactions.
Theoretical Contributions
Prior research on supply-chain (or more specifically, customer-to-supplier) contagion (see the revised E-Companion's new Table B1 in Web Appendix B) has shown that customer-related negative information can adversely impact a supplier's shareholder value. A manufacturer's decision to recall defective products is a notable omission in the literature. One can argue that the recall is “just another” negative information and thus theoretically identical to other customer-related negative information. However, the manufacturer's recall is an admission of low product quality, which is customer-related negative information directly related to the firm's supply-chain management. More importantly, recall information is substantively distinct from negative information about the manufacturer's accounting, finance, or management failure (e.g., low earnings, bankruptcy filing, and misconduct). As a result, one cannot confidently extrapolate prior research findings to contagion in the recall context. We show that a manufacturer's recall reduces its supplier's shareholder value. This finding contributes to the supply-chain contagion literature by replicating the contagion (or negative spillover) effect in the OM-relevant context of a customer's admission of a product-quality defect. Although managerially relevant, we do not frame this finding as a contribution because prior research has shown contagion, albeit in non-recall contexts.
We offer contributions to (1) the supply-chain contagion literature (see Table B1), (2) screening theory, and (3) the customer information disclosure literature.
First, the supply-chain contagion literature (see Table B1) has examined the presence of contagion and explained heterogeneity through managerially uncontrollable variables (e.g., headquarters’ country/region) (e.g., Hendricks et al., 2020; Qiu et al., 2024). We contribute to this literature by demonstrating that the supplier's prior customer-related disclosures and recall contextual variables can mitigate shareholders’ perceived uncertainty, influencing their punitive reaction to the manufacturer's recall (Eckert, 2020). Interestingly, the supplier's revenue dependence on the recalling customer, disclosed as part of the superset of customer information, aggravates the reaction. Thus, we extend the contagion literature by demonstrating that managerially controllable and contextual variables can influence contagion.
Second, prior research on screening theory (Bergh et al., 2020; Connelly et al., 2021; Sanders and Boivie, 2004) has implicitly assumed that a less-informed decision-maker (e.g., the supplier's shareholders in our context) undertakes a single-stage screening to alleviate their uncertainty and make their decision. We extend the screening theory by suggesting that shareholders’ preferred screen may be unavailable, leading them to adopt a two-stage screening approach. In our recall context, the ideal (and obvious) screen is the supplier's revenue dependence on the recalling manufacturer. However, the supplier may not have disclosed this information in its most recent annual report. This nondisclosure is legally compliant and arguably preferred because it prevents the supplier from disclosing proprietary information to rivals and thus avoids the costs of proprietary information (Ellis et al., 2012; He et al., 2020). Therefore, shareholders undertake a two-stage screening. First, they check whether the supplier voluntarily disclosed customer information in the most recent annual report. The supplier's transparency in revealing customer information may attenuate shareholders’ perceived uncertainty about the supplier's customer relations, mitigating their punitive reaction. Second, if the supplier disclosed its revenue dependence on the recalling manufacturer-customer, the dependence amplifies shareholders’ demand uncertainty, aggravating their punitive reaction. We reason that this two-stage procedure is a novel addition to screening theory.
Third, the literature on customer information disclosure presents two-sided arguments about whether shareholders value this disclosure (Bayer et al., 2017; Ellis et al., 2012; Xu et al., 2024). On the one hand, the disclosure signals the firm's transparency, boosting shareholder value. On the other hand, it can allow the firm's rivals to poach its customers, impeding shareholder value. We contribute to this literature by documenting disclosure's asymmetrical effects in the substantive context of customer recall, which impacts the supplier's shareholder value. Disclosing “general” customer information helps limit shareholder-value loss. In contrast, disclosing “specific” customer information (i.e., revenue dependence on the recalling manufacturer) amplifies shareholder-value loss. Thus, our findings generalize the two-sided arguments, expanding the disclosure's benefits and costs when demand uncertainty is high (Cohen and Li, 2020; Fang et al., 2011; Korcan and Patatoukas, 2016; Patatoukas, 2012).
Managerial Implications
Our findings alert supplier firm managers that a manufacturer-customer's recall can induce shareholders’ punitive reaction, reflected in a drop in the supplier's shareholder value. More importantly, we reveal several factors that can mitigate or aggravate this contagion.
We suggest managers consider the contagion effect of a customer's recall when deciding whether to disclose customer information. The disclosure can attenuate contagion by revealing the supplier's alternative sources of revenue. At the same time, disclosure may exacerbate contagion by revealing the extent of revenue in jeopardy. Notably, nondisclosure is not necessarily a panacea. For example, if the supplier's performance declines due to a customer's large recall, the lack of information about the supplier's revenue dependence on that customer may induce shareholder distrust. They may fear the worst-case cash flow drop and impose the highest penalty on the supplier. Disclosure's two-sided implications highlight the delicate balance managers must strike between transparency and anticipatory management of recall risks, especially in industries characterized by frequent recalls—for example, an automotive supplier can expect about three large-scale customer recalls each year. We performed a post hoc analysis to empirically determine when a voluntary disclosure strategy may be effective in preventing contagion. Results show that if a supplier's customers account for < 21% of its annual sales revenue, it should voluntarily disclose its customer relationship information. Conversely, if major customers account for 21% or more of the supplier's annual sales revenue, disclosure's aggravation outweighs mitigation, suggesting that the supplier is better off not disclosing the relationships.
Additionally, when contagion looms, the supplier may fare better by leveraging several firm- and recall-specific characteristics. Specifically, larger, older suppliers with greater liquidity and better customer relations are less susceptible to contagion. By contrast, larger recalls and those covered broadly and positively by news publishers exacerbate contagion. Recalls triggered by software versus nonsoftware defects yield milder contagion. Thus, managers can proactively mitigate contagion by improving financial flexibility and strengthening customer ties. If these characteristics provide sufficient mitigation, managers may evaluate whether the disclosure's costs (i.e., revealing dependence) dominate the reduced benefits (i.e., transparency about alternative revenue sources). Lastly, empirically, recall characteristics’ mitigation is more potent when the firm does not disclose customer information than when it does—recall characteristics’ effects are stronger in Model 1 than in Model 2—further highlighting the usefulness of knowing which characteristics blunt large recalls’ effects if firms decide not to be transparent about customer information.
Limitations and Future Research
Our research provides initial proof-of-concept evidence that suppliers can, to some extent, mitigate a customer recall's negative effect. We hope our findings serve as a basis to generate hypotheses that can be formally tested in the future. In addition to the need to more firmly establish the current findings, we propose that further research could examine three specific extensions. First, we provide evidence from the U.S. automotive industry. Future research should consider checking our findings’ generalizability to (1) other industries (e.g., such as food and medical devices), and (2) other countries where institutions and regulations differ from those in the United States (e.g., China). Second, we focus on the upstream (i.e., customer-to-supplier) contagion. Future research could test for downstream contagion. For example, when Takata Corporation announced its airbag recall, how did Takata's customers’ shareholders react? We posit that a mechanism different from our proposed mechanism (of demand uncertainty) might explain the answer. Third, future research could investigate whether contagion occurs and how it can be mitigated for other customer-related negative events, such as production halts and employee strikes (Astvansh et al., 2023; Astvansh and Simpson, 2025). In summary, our research represents a valuable first step at the intersection of manufacturer-specific operational failures and manufacturer–supplier relations, providing avenues for future research.
Supplemental Material
sj-docx-1-pao-10.1177_10591478251397690 - Supplemental material for Product Recall Contagion in the Supply Chain
Supplemental material, sj-docx-1-pao-10.1177_10591478251397690 for Product Recall Contagion in the Supply Chain by Ljubomir Pupovac, Vivek Astvansh, François Carrillat and Renaud Legoux in Production and Operations Management
Footnotes
Acknowledgements
This article is the first essay of Ljubo's doctoral thesis, which won the Pennsylvania State University Institute for the Study of Business Markets’ (ISBM's) 2019 Doctoral Support Competition. The authors thank Gary Lilien for his valuable work on earlier versions of this article and Thomas Schreiner for his assistance with the text analysis.
Declaration of Conflicting Interests
The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Funding
The authors received no financial support for the research, authorship, and/or publication of this article.
Notes
How to cite this article
Pupovac L, Astvansh V, Carrillat F and Legoux R (2025) Product Recall Contagion in the Supply Chain. Production and Operations Management xx(x): 1–17.
References
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