September 23, 2022 11:59 Updated Follow You are eligible to start working overtime once you complete New Employee Training. Related articles How often will I work overtime working with IDOC? If I work within IDOC, when can I advance? What happens if I like working for the State but I do not feel that being in a Custody position is for me? When working with IDOC, when do I receive additional training such as firearms? How will I get my monthly pension benefit?