Thanks to COVID, a way of working has been dramatically changed. My company has also introduced and promoted working from home. One of my junior colleagues has been suffering from a slight fever for two weeks but she was working from home. He had a bunch of things to do, so he worked overtime almost every day while being sick. His manager didn't ask him to do so, but he wanted to complete his tasks. Working from home brings flexibility and discretion for us but we need to use it wisely.