All districts (federal) and state probation offices will differ in the policies they abide by. All federal and most state offices enforce a policy called third-party risk. Essentially, if your conviction or your history (including prior offenses) presents a third-party risk to anyone you interact with on a routine basis, than the PO has a duty to inform that person/entity. For example, if a guy is convicted of domestic violence, and plans to live with a new girlfriend, he obviously presents a third-party risk to his girlfriend. The PO would certainly have to inform his girlfriend of the conviction. In your case, the only employment that may present a third-party risk is if your a deliver driver or perform some other job that requires you to drive. Additionally, there may be a third-party risk if you job involves being around alcohol (i.e. bartender, waiter, etc.). Lastly, even if your conviction does not present a third-party risk, your PO may want you to inform your employer of your conviction. This is because most POs like to establish collateral contacts with the people who you spend a lot of time with (i.e. employers, family, friends, treatment providers, etc.). Establishing collateral contacts allows the PO to be better informed about problems, issues, or concerns that the probationer is experiencing; especially since probationers won't always disclose everything to their PO.