I know people who work 12 hours a day, six days a week, or more. Some people do so because of a work emergency where the long hours are only temporary. Other people I know have put in these hours for years. I don't know if they are working all these hours, but I do know they are in the office this long. Others put in long office hours because they are addicted to the workplace. Whatever the reason for putting in overtime, working long hours over the long term is harmful to the person and to the organization .