Exelon Business Services Company is a support unit of Exelon Corporation, which is a registered public utility holding company and serves more than 5 million electricity customers in Illinois and Pennsylvania through its subsidiaries. Exelon Business Services Company offers financial, human resources, legal, information technology, supply management and corporate governance services for Exelon Corporation. The company maintains audiovisual operations and assists parent company with accounts payable, communications and government affair management services. It also has an employee service center, as well as offers security and payroll services. Exelon Business Services Company works to ensure environment, health and safety codes compliance for Exelon Corporation and its other subsidiaries.