One who pays; one who compensates, rewards, or requites; specifically, an officer or agent of a government, a corporation, or an employer, whose duty it is to pay salaries, wages, etc., and keep account of the same.

a person in charge of paying wages

An independent talent payment service acting as the employer of record.

Paymaster is a payroll and HR database application designed to be flexiable and powerful enough to meet the demands of heavy users, but simple enough that small businesses can use it.