Towards the end of the nineteenth century, leisure was reserved for the few. By the end of the twentieth century, however, most workers had a regulated normal working time of 40 or fewer hours per week, annual paid leave, and overtime compensation. In this paper, I investigate which political parties brought forth these changes – which party constellations supported or opposed working-time reforms and argue that sector and class differences drive party preferences. Lower-class and urban middle-class workers demanded regulation as demand for leisure increased with income. In contrast, employers and farmers opposed such reforms. Accordingly, the study argues that socialist and social-liberal parties were inclined to support leisure-securing working-time reforms, whereas conservative and farmer parties opposed them. Due to their linkages with workers and farmers, liberal parties may be divided into a rural constituency that tends to oppose working-time reforms and an urban constituency that supports them. I test these expectations using parliamentary data: 65 roll-call votes from Norway between 1880 and 1940, combined with analysis of major reforms and legislative appeals. Finally, I undertake a generalization test using country-level reform data from 33 democracies between 1880 and 2010. Results generally fall in line with expectations, and the pattern is stable over time.