I want to see this verified. I'll bet it assumes no on-the-job injuries. (From another source "The greatest risks of job-related injury were among 1) construction workers in evening shifts, 2) professional, technical, and managerial personnel working overtime schedules, and 3) employees working overtime shifts in the business and repair services sectors.")
Hmm. There's been a link change--I'll have to find the right off-campus link page tomorrow to look at the paper itself.