Physical/Mental Requirements and Working Conditions Ability to perform frequent/occasional walking, lifting, bending, sitting, squatting, standing, climbing, kneeling, and handling objects; frequent reaching above shoulder levels; frequent carrying and lifting loads from 25 to 50 pounds. Analyzes workplaces and designs programs to identify, control, eliminate and prevent disease or injury caused by chemical, physical and biological agents or ergonomic factors that involve the impact of equipment design on a workers comfort or fatigue.