OM vs. Usual Care. Knowledge of the worksiteFull Service Occupational MedicineTIME = $Injury CareCare ManagementCare Management StudyOccupational Medicine-Based PT StudyReturn-to-Work Case Management. 1. Knowledge of the Worksite. Includes knowledge of the operationKnowledge of requirements of highest risk jobsKnowledge of modified duty policies and optionsKnowledge of the people, HR, supervisorsKnowledge of the culture.