The impact of pay transparency in job postings on the labor market

Summary

The research paper "The Impact of Pay Transparency in Job Postings on the Labor Market" by Arnold, Quach, and Taska, published in 2025, investigates the effects of state-level policies requiring employers to disclose salary information in job advertisements. The authors note that despite proposals for pay transparency to combat wage stagnation and reduce wage gaps, empirical research on its labor market impact has been limited. While increased information for workers could strengthen bargaining power, it also introduces the potential for tacit collusion among firms in wage setting. To study these effects, the authors employed a difference-in-differences design, focusing on a January 2021 law implemented in Colorado that mandated the inclusion of expected salary information in job postings. Their methodology involved analyzing data from multiple sources, including Lightcast for job posting data, and Glassdoor and the Quarterly Census of Employment and Wages (QCEW) for actual earnings information. The study's findings reveal that the Colorado law significantly increased the proportion of job postings that included salary information by approximately 30 percentage points, although some non-compliance still persisted. For firms that posted salaries both before and after the policy's enactment, average posted salaries saw an increase of about 3.6%. The authors also observed a corresponding increase in the actual earnings of workers. Importantly, the research found no adverse impacts on key labor market indicators such as pay dispersion, the overall number of job postings, or the skill and education requirements for positions. The findings suggest that pay transparency enhances competition in the labor market, leading to positive spillovers that benefit not only new applicants but also incumbent workers and firms that consistently provided wage information. This implies that policies promoting pay transparency can lead to higher wages by increasing information in the application process, thereby strengthening workers' bargaining power without detrimental effects on labor demand.