call in

US /kɔːl ɪn/
UK /kɔːl ɪn/
"call in" picture
1.

to ask someone to come to a particular place, especially to help or for a specific purpose

:
We had to call in a specialist to fix the complex issue.
The company decided to call in all defective products.
2.

to report to work, especially by phone, when you are unable to go

:
She had to call in sick because of a bad cold.
Employees are required to call in if they will be late.