Research in the workplace reveals that people work for many reasons…

Correct answer: besides money

Explanation: Use "besides" to mean "in addition to." The complete sentence reads: "People work for many reasons besides money," which means they have motivations other than pay.

• "money beside": wrong word order and misuse of "beside. It does not express "in addition to."

• "beside money": "beside" usually means "next to" (physical position), not "in addition to."

• "money besides": awkward and ungrammatical here. The correct phrasing is "besides money" or "for reasons other than money."

Grammar tip: "Besides" (with s) is used to mean "in addition to." It commonly appears before the noun phrase as in "besides money" or after the word it modifies as in "reasons besides money."