work overtime

:  activity in which one exerts strength or faculties to do or perform something:

:  sustained physical or mental effort to overcome obstacles and achieve an objective or result

:  activity that a person engages in regularly to earn a livelihood

:  used for work

:  suitable or styled for wear while working

:  involving or engaged in work

:  to bring to pass :  effect

:  to fashion or create a useful or desired product by expending labor or exertion on :  forge, shape

:  to make or decorate with needlework

:  time in excess of a set limit: such as

:  working time in excess of a standard day or week

:  an extra period of play in a contest