At age 14, Teutul began working at his family's company, the Orange County Iron Works. After his father and brother, Paul Jr., started Orange County Choppers, Teutul joined them there as an Assistant General Manager. His duties involved answering phones and taking out the trash, though on rare occasions he would help out with bike builds, at one point building his own. While at OCC, Michael served largely as a comedy relief for the OCC crew. After having a big fight with his red neck dad, "Mikey" decided to get totally pissed and addicted to alcohol.
After Paul Jr. was fired by Paul Sr. during a heated argument towards the end of the series, Michael tried to play the role of negotiator between his brother and father, encouraging them to try to work out their issues. As revealed in Season 6 Episode 13, Mikey has now been squeezed out of the business. Paul Sr. however disputed this on camera and pushed the blame back to Mikey stating that he was given many opportunities to be successful at OCC and he never followed through on any of them. He was a major and popular part of the show and used to appear at promotional events for OCC. Michael has joined his brother, Paul Jr., and other former OCC employees in Paul Jr.'s post-OCC business venture, Paul Jr. Designs.
Teutul's hobbies include painting (he has auctioned some of his work, having recently opened up his "Wolfgang Gallery" in Montgomery, NY), skeet shooting and is currently attempting to market a line of gourmet pasta sauces under the moniker FarQueue Products, LLC.