coemployee
/kəʊˈɛmploʊi/Definitions
1. noun
A person who works with someone else in the same organization, but is not in a supervisory or managerial position.
“The company is taking steps to address concerns from coemployees about the working conditions.”
2. noun
A person who shares the same place of work as another person, especially in a large organization.
“The CEO addressed the concerns of her coemployees during the company-wide meeting.”