Most Adults Have Worked Alternative Work Schedules During Their Early Careers
"By age 39 almost 90 percent of all respondents have had some experience with nonstandard schedules [i.e., working something other than a regular day shift]. For non-day employment specifically, the percentage is more than 70 percent," according to a 2011 analysis of the work schedules of over 7000 workers.
Presser, H. B., and Ward, B. W. (2011). Nonstandard work schedules over the life course: A first look. Monthly Labor Review, 134(7), 3-16. Retrieved from www.bls.gov.