Physically, workers must be able to: work easily and skillfully with hands; climb and maintain balance on ladders, scaffolds, and vessels; see well (naturally or with correction) and distinguish colors; reach for, handle, and grasp wires, conduit, and hand tools; bend, crouch, and work in small places; and lift and carry objects related to performing the job task. EMCOR companies plan, install, operate, maintain, and protect the sophisticated and dynamic systems that create facility environments—such as electrical, mechanical, lighting, air conditioning, heating, security, fire protection, and power generation systems—in virtually every sector of the economy and for a diverse range of businesses, organizations, and government.