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.