workmate

noun
UK /ˈwɜːkmeɪt/
US /ˈwɜːrkmeɪt/

A workmate is a person you work with.

My workmate helped me finish the big project.


OTHER MEANINGS

2. A person who shares a job or workplace with you and often helps you.

She and her workmate always eat lunch together.

3. A fellow member of a group or team doing the same task.

The two workmates painted the fence side by side.

4. A companion in a shared job or duty.

He thanked his workmate for covering his shift.