clock off phrasal verb British English ( see also ↑ clock )
1 . informal to leave work at the end of the day:
What time do you clock off?
2 . to record on a special card the time you stop or leave work:
By 6 p.m. most workers have clocked off.
CLOCK OFF
Meaning of CLOCK OFF in English
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012