I used to pioneer with some one who got really behind on his "time". Well close to the end of the service year, this person started putting 175 hours per month. No one believed these were true hours, but how could anybody prove it?
When I was a 17-year-old regular pioneer there was a 19-year-old pioneer in my congregation who I knew was faking his hours. I'd rarely see him in service. He'd often oversleep when we were supposed to go out together, and I'd have to go get him out of bed.
He was always careful to ask how many hours I had put in so far in the service year so that he would always be only 10 or 20 hours behind my pace. Then in August he all of a sudden wanted to go on vacation and lo and behold he somehow had managed to finish his 1,000 hours one month early. This was going to be a well-earned vacation without worrying about having to complete his time. Meanwhile, I had to put in a 12-hour service day on August 31st to finish out the service year.
Within a year he was publicly reproved for sleeping with a married sister.