The Impact of Using a Joint Auditor Considering Management Expectations in the Supply Chain on Cost Stickiness
Keywords:
Uncertainty, Joint Auditor, Pessimism, Optimism, Cost Stickiness-Abstract
This study aims to examine whether the use of joint auditors, under optimistic or pessimistic managerial expectations, affects the degree of cost stickiness among firms. This fundamental, correlational study used financial data from all companies listed on the Tehran Stock Exchange between 2012 and 2023. Data were collected using library research, firms’ financial statements, and databases such as Tadbir-Pardaz and Rahavard Novin. No sampling was conducted; instead, the full accessible population was analyzed. Panel-data regression models were estimated using generalized least squares to test the hypotheses after conducting diagnostic tests (Limer and Hausman) to determine the proper estimation technique. The results indicated that joint auditing does not have a statistically significant effect on cost stickiness—neither when managerial expectations are optimistic nor when they are pessimistic. Interaction terms between joint auditor presence and managerial expectations were statistically insignificant in both tested models. Thus, both hypotheses were rejected, demonstrating that joint auditors do not influence asymmetric cost behavior in Iranian firms. The findings suggest that joint auditing, despite its potential informational benefits, does not mitigate cost stickiness within the institutional and regulatory context of Iran. Weak auditor independence, inadequate oversight structures, and the limited role of audit reports in managerial decision-making may explain the lack of impact.
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Copyright (c) 2025 Vahid Raboobi (Author); Hamidreza Bazazzadeh Torbati (Corresponding author); Mohammad Karami (Author)

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