Your parents are dead, and it doesn't matter whether your boss and colleagues know or not, because your parents are dead, which has nothing to do with them, and it's not that their parents are dead. At best, they will say, oh, or know. It will also make your mood worse. The impact on your work should be that your mood has become somewhat different from before. It seems that this thing is a stone, and it has been in my mind all the time.