Specialization: Specific positions may specialize in one or more functional areas, including air, water, waste, energy conservation, social responsibility, regulatory compliance, accident prevention, fire protection, life safety, process safety, occupational health, construction safety, and ergonomics. Depending on the specific position, you must be willing and able, with or without reasonable accommodation, to maintain your face daily so that a respirator/face mask can seal properly (some examples include being free of facial hair and/or clean shaven).