Table 5

 Adjusted hazard ratios and 95% confidence intervals for injuries or illnesses reported in jobs with exposure to overtime and extended hour schedules, after controlling for age, gender, occupation, industry, and region

Exposure categoryAdjusted hazard ratio95% CI
NLSY data, 1987–2000, n = 109 087 job records.
Extended hours/week (⩾60)1.231.05 to 1.45
Extended hours/day (⩾12)1.371.16 to 1.59
Overtime1.611.43 to 1.79
Extended commute time (⩾2 hours)0.870.59 to 1.23
Any type of overtime or extended hours1.381.25 to 1.51