[en] The Nuclear Regulatory Commission published for public comment a proposed rule concerning the fitness for duty of commercial nuclear power plant workers (53 FR 36795). The proposed rule focused on methods for controlling the use of substances that may affect the trustworthiness and performance of workers. It provides for chemical testing, behavioral observation, employee awareness and education, and employee assistance programs as means for assuring fitness for duty. This report summarizes the comments received on the proposed rule and provides the staff resolutions of the issues raised by the comments. 3 refs