EMCOR Group is an electrical and mechanical construction and facilities services firm. In addition, Co. provides building services and industrial services. Co.'s services are provided to its customers through its operating subsidiaries and joint venture entities. Co. engages in providing construction services relating to electrical and mechanical systems in various types of facilities and in providing various services relating to the operation, maintenance and management of facilities. Co. also provides its construction services indirectly by acting as a subcontractor to general contractors, systems suppliers, construction managers, developers, property managers and other subcontractors.