I have to say that the reality is that many people work more than 20 hours a week but they don't get any medical insurance from employer. I work in chinese restrurant and my wife works in Japanese ramen restrurant. I have seen and known that the employer doesn't provide medical insurance even though they know some of employees work more than 20 hours. i asked my coworker why you knew the law but still kept in silent, she told me that she was afraid of losing her job. Therefore, we have an excellent law that is good for people. However, how to implement the law to truly protect volunerable people is still skeptical.