The document outlines Kirkpatrick's four levels of evaluation that can be used to assess the effectiveness of safety training programs for supervisors. The four levels are: Level I) evaluate participant reaction; Level II) evaluate learning; Level III) evaluate behavior change; and Level IV) evaluate results including organizational goals and safety impacts. It provides details on the tools that can be used at each level and recommends starting with Level I and working through all four levels sequentially. The document applies this framework to evaluate the current monthly supervisor safety training program at SOCHD using reaction questionnaires, pre-and post-tests, on-the-job observations, and analyzing results.