Private investigator checking if your sick leave is real?

When I read this news, I thought this must be some online humor. Then again, it’s not April Fool’s Day yet. So, I went to google and below are all the different media links to this piece of actual and real news. Briefly, there are companies who do not believe their employees are really sick, so they hired private investigators to check out these cases of employees taking medical leave. Are you worried now every time you apply for sick leave? Better stay home and not go anywhere yeah.