Labour study: back-to-work legislation

  Please read the article "What Is 'Back-To-Work' Legislation? And How Does It Work?" https://www.huffingtonpost.ca/2018/11/26/what-is-back-to-work-legislation-and-how-does-it-work_a_23601207/ IN YOUR OWN WORDS, please tell me what back-to-work legislation is. In your answer, provide one example of when it has been used.