They do not have to preserve seasonal workers on the payroll for the duration of slow instances of the year when they aren’t required. https://www.tumblr.com/misoodasblog/765909743853322240/%EC%97%AC%EC%84%B1%EC%95%8C%EB%B0%94-%EA%B5%AC%EC%9D%B8%EA%B5%AC%EC%A7%81-%EB%B3%80%ED%99%94%ED%95%98%EB%8A%94-%ED%8A%B8%EB%A0%8C%EB%93%9C%EC%99%80-%ED%9A%A8%EA%B3%BC%EC%A0%81%EC%9D%B8-%ED%99%9C%EC%9A%A9%EB%B2%95?source=share