Return-to-Office Mandates and the Hidden Cost of Brain Drain

By Yuye Ding, Zhao Jin, Mark (Shuai) Ma, Betty (Bin) Xing, and Yucheng (John) Yang

As firms across the U.S. reinstate in-office work requirements, return-to-office (RTO) mandates have become a flashpoint for employee-employer tension. While some executives view these mandates as necessary for culture, collaboration or even as a subtle workforce reduction tool, our research provides the first large-sample empirical evidence that RTO mandates impose substantial human capital costs, especially by accelerating the loss of high-performing and diverse talent.

Study Overview

We collected RTO announcements for 54 large technology and financial firms in the S&P 500 that implemented RTO mandates between 2020 and 2023. These firms were selected also due to their broad reliance on knowledge workers and wide adoption of LinkedIn profiles, making them suitable for the analysis of a mobile sector of the labor market.

Using online employee profiles from more than three million individual workers, sourced from Revelio Labs, a data provider of LinkedIn records, we track changes in employee turnover and hiring behavior before and after RTO announcements. We supplement this with job posting data from LinkUp and industry-level turnover benchmarks from the U.S. Bureau of Labor Statistics.

Key Findings

1. RTO Mandates Significantly Increase Employee Turnover

Firms experience an average 13–14 percent increase in abnormal turnover rates after announcing RTO mandates. Importantly, our difference-in-differences (DiD) analysis validates that this effect is not due to industry or macroeconomic trends but directly follows the mandate itself.  We conduct additional validation tests and find that the parallel trends assumption holds, and placebo tests using “pseudo” RTO dates show no effect, reinforcing the causal interpretation.

2. High-Value and Underrepresented Talent Is Most Likely to Leave

We further study the type of employees that firms are more likely to lose following the RTO mandates. We find that turnover is not evenly distributed across the workforce:

• Female employees are significantly more likely to leave post-RTO, with a turnover increase nearly three times higher than that of male employees.
• Mid- and top-level managers show greater attrition compared to junior staff.
• High-skilled employees are also more likely to leave compared to low-skilled employees, using the skills employees report on LinkedIn.

These findings suggest that RTO mandates disproportionately drive away experienced, skilled, and diverse employees, who are also more likely to have external options or have greater bargaining power.

3. RTO Firms Face Increased Hiring Friction

Beyond turnover, firms experience reduced success in attracting new talent post-mandate:

• Job vacancy duration increases by 23%, from 51 to 63 days on average.
• Hire rates decline by 17%, even after adjusting for national hiring trends.

These findings point to increased hiring costs and decreased employer attractiveness in a tight labor market where flexibility is a top job-seeker priority.

4. Departing Employees Prioritize Flexibility Over Advancement

We conduct a novel flow analysis tracing characteristics of departing employees’ subsequent jobs. The data reveals:

• A higher percentage move to different industries, without any corresponding promotions.
• Employees are more likely to accept lateral or lower-ranked positions in exchange for flexibility post-RTO, from 41.6 percent to 46.4 percent.

These results suggest that the cause for leaving a firm after RTO are not the usual reasons for promotion or mobility. Instead, they highlight that employees are willing to sacrifice career advancement for remote work options.

Implications for Boards and Management

While RTO mandates are often promoted as a productivity measure, or quietly deployed as a cost-saving substitute for layoffs, our evidence suggests they carry hidden strategic costs:

• They lead to the departure of employees who are hardest to replace.
• They undermine diversity goals by disproportionately impacting women.

They reduce firms’ competitiveness in hiring, especially in high-skill sectors.