Using firms’ online job postings, we identify economically related peer firms in the labor market. Firms’ labor peers are vastly different from their industry peers, where the overlap is about 20%. Returns of labor-linked firms strongly comove, suggesting common responses to labor market shocks on average. However, industry shocks can affect firms outside the industry through the labor network, leading to substitution effects between labor peers. Last, we show that investors do not promptly incorporate news about labor-linked firms, leading to predictable subsequent returns. A long-short strategy exploiting this delay generates an average annualized excess return of 9%.

Mortgage fraud was a leading force behind the 2008 financial crisis. We measure the fraudulent income overstatement at the bank-ZIP Code-year level as the difference in the local growth between reported income in mortgage applications and the income based on IRS data. We find that overstated income is positively associated with banks’ internal control weaknesses over financial reporting and negatively associated with subsequent remediation of such weaknesses. The associations are concentrated among banks that integrate their accounting and operation processes, as proxied by the adoption of an Enterprise Resource Planning system. Finally, using the removal of internal control provisions in the Federal Deposit Insurance Corporation Improvement Act in 2005 as a shock to internal control quality, we find that affected banks experience increased income overstatement on mortgage applications. Data Availability: Data used in this study are available from the public and proprietary sources identified in the article. Access to proprietary data is subject to the relevant providers’ licensing restrictions.

We examine whether audit partners’ ownership stakes in affiliated non-audit businesses are related to audit quality. We argue that non-audit ownership is a relatively sharp measure of auditor-client economic bonding, which can impair auditor independence. Using a unique setting in China where we observe partners’ equity stakes in both audit and non-audit businesses, we find that audit adjustments are significantly smaller when engagement partners hold larger ownership stakes in non-audit businesses. Audit adjustments are further reduced when the entire audit partnership holds greater ownership in affiliated non-audit businesses, suggesting that non-audit ownership matters at the audit firm level as well. Additional analyses suggest that these results are driven by impaired independence, rather than partner distraction or endogenous partner-client matching. Our study informs ongoing policy debates on the structuring of audit and non-audit businesses as well as the investments of non-audit entities in accounting practices. Data Availability: The authors have nondisclosure and confidentiality agreements for their use of proprietary data, which were provided to the authors for independent academic research only. Nonproprietary data are available from sources identified in the text.