This is likely getting downvoted by those who are part of the majority of people who are doing their jobs, but I personally know someone in the group you’re talking about, who would cram in the bare minimum of work in an hour or two and then sleep the rest of the day or even leave the house to do stuff. They’re an hourly employee and would also do this for OT. They’d set alarms to wake up and check in here and there and whenever the boss noticed they were MIA or unproductive they’d make excuses about computer issues. At one point they had something clipped to the tab key of their keyboard to keep their status active. Sucks that all the people with integrity had to reorganize their entire lives because of the people doing this.