I need a single word to define an employee, contractor or any business entity (e.g. sole-proprietorship, corporation) that provides services in exchange for pay.
I saw https://english.stackexchange.com/a/14187/152901 but the terminology is too vague for my liking.
https://english.stackexchange.com/a/248668/152901 suggests "Vendor" which comes close to what I'm looking for, but I don't believe the definition covers employees.
UPDATE: I am looking for a word which is the union of a "Vendor" (which refers to a company) and "Worker" (which refers to an individual). Ideally the word should be stated from the perspective of the individual/company (what would they call themselves?) and should imply some sort of business relationship.