Meaning of the word "clock on" in English

What does "clock on" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

clock on

US /klɑːk ɑːn/
UK /klɒk ɒn/
"clock on" picture

Phrasal Verb

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

Example:
I need to clock on by 9 AM to avoid being late.
He always clocks on exactly at 8 AM.