Early in my career I did. I was a Utility Worker B at Hughes Aircraft. My job was to move boxes and parts from point A to point B by whatever means necessary. Sometimes, point B was at the location on the far side of Los Angeles International Airport. It was a 20 minute ride. But due to Hughes Aircraft's enormous parking lots, it was a 40 minute drive. So my bike was seen as super speedy.

The best part was that the company also had truck drivers who would take a day to get a part over to the other site. They hated me. I made them look bad. They called the union stewards on me so often for working out of my job, that I had to carry a copy of my job description with me when I rode, to prove to the steward that I was just doing my job.

Ironically, if they wanted to bust me for working out of my job, all they had to do was come to my desk and see that I also maintained a large parts bank and disassembled Telescopic Sight Units.

Finally, they got me one day. I had just gotten promoted to being a full technician. They were delivering a huge stone test bench and asked me to come over and help them. We got the test bench mounted in its frame. Then they saw me walk back over to my test bench and resume work. That set them off. They called the union steward. He found that I had been promoted, and as such wasn't working out of my job, but that I had been when I went over to help the truck drivers. Busted!, However, since they had asked me to help, no infraction had been comitted.