With the emergence of “hot labor summer” and an increase in the coverage of major work stoppages, 2023 marked an important year for the U.S. labor movement. We are excited to release the third Labor Action Tracker Annual Report, in which we present key findings from our 2023 work stoppage data. Since funding cuts by the Reagan administration in the early-1980s, the Bureau of Labor Statistics (BLS) has only documented work stoppages involving 1,000 or more workers that last at least an entire shift. By only recording large work stoppages, official data sources exclude the vast majority of strike activity, posing issues for policymakers, practitioners, and scholars in determining the extent of workplace conflict across the country. Increasing considerably over the past three years, strikes are an important tool for workplace and labor activism. In this report, we follow the lead of the BLS and document work stoppages, which include both strikes and lockouts. You can follow our project and view our monthly reports of strike activity on X (formerly Twitter) @ILRLaborAction.