associate
If you're looking to impress a business associate, this would be a great place to take them for lunch.
The new president filled the cabinet with close friends and former business associates.
He was charged with fraud along with two of his business associates.

SMART Vocabulary: related words and phrases

Employees & colleagues
alum
alumna
alumnae
alumni
alumnus
compatriot
girl
goonda
hireling
homeworker
homeworking
nominee
office politics
office spouse
operative
oppo
payroll
peon
self-starter
workmate