 
Private detectives and investigators held about 48,000 jobs in 2002. About a third were self-employed, including many who held a secondary job as a self-employed private detective. Almost a fifth jobs were found in investigation and security services, including private detective agencies, while another fifth were in department or other general merchandise stores. The rest worked mostly in State and local government, legal services firms, employment services, insurance carriers, and credit intermediation and related activities, including banks and other depository institutions.
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