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α: calibrated so average coauthorship-adjusted count equals average raw count
The labor markets in the railroad industry went through extensive institutional changes between 1890 and 1945. Federal laws increased railroad employers' liability for workplace accidents in several stages. Unions expanded to cover more occupations. The federal government set railroad wages during World War I and then mediated and arbitrated a large number of collective bargaining disputes between 1920 and 1945. We examine how these changes in institutions affected compensating differentials for fatal and nonfatal accident risk. The increasing role of unionization and government intervention coincided with a decline in the size of compensating differentials.