Casual employment refers to a technique of hiring employees on a work-as-needed basis. https://www.tumblr.com/misoodasblog/768444772899864576/%EB%8C%80%EC%A0%84-%EB%B0%A4%EC%95%8C%EB%B0%94-%EC%97%AC%EC%84%B1-%EA%B5%AC%EC%9D%B8%EA%B5%AC%EC%A7%81%EC%9D%98-%EC%83%88%EB%A1%9C%EC%9A%B4-%EA%B8%B0%ED%9A%8C?source=share
