o·ver·time 
(ōvər-tīm′)
(ōvər-tīm′)n.
1. Time beyond an established limit, as:
a. Working hours in addition to those of a regular schedule.
b. Sports A period of playing time added after the expiration of the set time limit.
2. Payment for additional work done outside of regular working hours.
adv.
Beyond the established time limit, especially that of the normal working day: The newspaper staff worked overtime.
tr.v. (ō′vər-tīm) o·ver·timed, o·ver·tim·ing, o·ver·times
To exceed the desired timing for: overtime a photographic exposure.