Hours of Part‐Time and Full‐Time Workers at the Same Firm

Nearly half of all firms hire both part‐time and full‐time workers. This note uses the results of a unique survey of more than 5,000 establishments to examine the ratio of part‐time weekly hours to full‐time weekly hours at firms employing both types of worker. The distribution of relative hours appears fairly stable across industries, Regression analysis shows that higher quasi‐fixed labor costs increase the ratio of part‐time to full‐time hours, although the effect is empirically small.