U.S. Department of Justice Office of the Inspector General | 8,357 followers on LinkedIn. Official LinkedIn of Justice OIG. DMs not monitored. Contact our hotline https://oig.justice.gov | The Office of the Inspector General (OIG) in the U.S. Department of Justice (DOJ) is a statutorily created independent entity whose mission is to detect and deter waste, fraud, abuse, and misconduct in the DOJ, and to promote economy and efficiency in the Department’s operations. The OIG investigates alleged violations of criminal and civil laws by DOJ employees and also audits and inspects DOJ programs.