[jrs235]

They might do it for short stints to "get ahead" if their scheduling allows it. If I know I'm going to get that extra time off in the future or I'm getting paid for it (garaunteeing I was compensated for it) I might do it for a week or two to save up for a nice vacation or time off to do my own thing. As a manager or business owner... I'd never encourage it and possibly not allow it. The hours worked beyond 40 in a week often have drastic diminishing returns and increases in mistakes or poor thinking.