Meaning of “staff” - Learner’s Dictionary

staff

noun [ group ] us uk /stɑːf/
I would like to express my deep gratitude to all the hospital staff.He made a point of learning all the names of his staff.Airport staff are trying to minimize the inconvenience caused to passengers.We'll be taking on two new members of staff.Has the news been communicated to the staff yet?

A2 the people who work for an organization:

The report included doctors, nurses, and other hospital staff.
The company has a staff of over 500 employees.
Please talk to a member of staff.

(Definition of “staff noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)