Work is performed in field, road, shop, and outdoor environments, including exposure to temperature extremes, weather conditions, moderate noise levels, heavy equipment, moving vehicles, and oilfield locations. Must be able to pass DOT drug and alcohol pre-employment testing, DOT-compliant post-offer physical, and job-relevant screens, including vision, hearing/audiogram, musculoskeletal assessment, pulmonary screening, drug screen, and functional capacity evaluation as required for the role.