clock on

US /klɑːk ɑːn/
UK /klɑːk ɑːn/
"clock on" picture
1.

打卡上班, 签到

to record one's arrival at work, especially by punching a time clock

:
I need to clock on by 9 AM to avoid being late.
我需要在早上9点前打卡上班,以免迟到。
He always clocks on exactly at 8 AM.
他总是准时在早上8点打卡上班