Does the CfA have a policy about working alone?
Yes. No one who is performing hazardous operations may work alone.This includes persons working with machines in the machine shops and those working with hazardous substances in the labs. Supervisors should assess the hazards in their areas and determine which, if any, operations performed by their personnel should not be performed alone and notify their people of this fact. Prohibitions against working alone should be written into standard operating procedures where applicable. Supervisors are encouraged to call the Safety Office if they have questions.
