Environment: Work outside and inside, on slippery, hard or uneven walking surfaces; frequent exposure to extreme hot and cold temperatures, dust, noise, vibration; exposure to chemical and electrical hazards; work around machinery with moving parts; regularly work irregular hours; occasional prolonged hours. Motion: Frequent walking, climbing stairs/ladders/scaffolding; regular grasping/squeezing, wrist flexion/extension, and overhead reaching; frequent quick movements in small areas.