If you say that someone is overpaid, you mean that you think they are paid more than they deserve for the work they do. grossly overpaid corporate lawyers. see also overpay underpaid. given more money for a job than you deserve underpaid
If you overpay someone, or if you overpay for something, you pay more than is necessary or reasonable. Management has to make sure it does not overpay its staff The council is said to have been overpaying for repairs made by its housing department The scheme will overpay some lawyers and underpay others. see also overpaid