The phrase "on the payroll" typically refers to an employee who is regularly paid by a company or organization. Antonyms for this phrase might include "unemployed," "freelance," "self-employed," "contract worker," or "part-time." Alternatively, a person who is not officially employed by a company may be referred to as an "independent contractor," "volunteer," or "intern." However, it's worth noting that the phrase "on the payroll" may also have negative connotations, suggesting that an employee is complacent or simply collecting a paycheck without actively contributing to the company. Thus, antonyms might also include more positive terms like "dedicated worker," "go-getter," or "top performer.