Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This article develops the first comprehensive set of estimates of daily hours of work in 1880 using new data from the Census of Manufactures. We conclude that the average workday was almost exactly 10 hours in 1880—almost a decade earlier than hitherto supposed. Our statistical analysis also reveals small but statistically significant variations in hours between firms and industries, between regions, and by location. We also find that higher-paid workers probably substituted leisure for income, that total employment was unresponsive to hours, and that hours and days of employment during the year moved together.