worker role worker "executes the study plan" includes the suppliers and manufacturers of reagents and other materials used in the study OBI Person:Jennifer Fostel Public sector workers in states that run their own OSHA programs are covered by those states. http://www.osha.gov/as/opa/worker/index.html a personnel role played by a party who executes a component of the study plan; this can occur before, during, after or outside the study timeline worker role investigation agent role metadata complete