translate English to French: 10 Sunter and Morissette (1994) found that although the average number of hours in the standard work week has not changed over the last decade, this stability masks a substantial polarization of workers into those working longer hours (50 or more per week) and those working shorter hours (less than 30 per week).
GOLD, D.R. et al. «Rotating shift work, sleep, and accidents related to sleepiness in hospital nurses» dans American Journal of Public Health, vol.