Adults with intellectual and developmental disability (IDD) increasingly are accessing inclusive college programs to gain academic and employment preparation for future community living. Decision-making and self-determination are two inter-related skills taught in these programs. In this study, we investigated an intervention that combined remote audio coaching (RAC) and a mnemonic strategy to teach employment decision-making skills to three college students with IDD. We evaluated the intervention using the range-bound changing criterion design to assess students' stepwise progress. All students substantially increased their employment decision-making skills, generalized those skills to a novel job coach who was not part of the intervention, and maintained the skills after the intervention was removed. We discuss implications of the procedures and results of this decision-making intervention, as well as the goodness-of-fit of the experimental design for evaluating controlled, gradual skill increases.