The effect of unionization on safety in bituminous deep mines

This article examines the impact of unionization on safety in underground coal mines. An accident causation model is used to isolate the effect of unionization from other injury rate determinants. Results indicate that union mines experience more disabling injuries per year than nonunion mines,ceteris paribus. Previous studies attributed higher union injury rates to poor nonunion reporting practices. The data examined here suggest that other factors, including the UMWA’s job bidding system, low productivity, labor characteristics, and other institutional factors contribute to high injury rates at union mines. The authors acknowledge the helpful comments of Michael G. Finn, Clark G. Ross, and C. Louise Nelson. This research grew from work funded under contract DE-AC05-760R00033 between the Department of Energy and Oak Ridge Associated Universities. The views expressed and responsibility for errors or omissions belong to the authors.