noun
piecework pay; payment by the job
Compensation based on the amount of work completed rather than time spent; used in contexts like manufacturing or freelance tasks.
この工場では仕上げ払いで給料が決まる。
In this factory, wages are determined by piecework pay.
Compound of 仕上げ (finishing, completion) and 払い (payment). The exact historical derivation is uncertain, but the term transparently refers to payment upon completion of work.