pieceworker

/ˈpiːsˌwɜːrkər/
noun
  1. A worker who is paid according to the amount of work they produce, not by the hour.
    • Pieceworkers often earn more than hourly employees, but their income can be less stable.
    • The company hired pieceworkers to assemble electronics during the busy season.
    • As a pieceworker, she could take breaks whenever she wanted as long as she met her targets.
Synonyms
What does "pieceworker" mean? | whatsthatwordmean | whatsthatwordmean