The Department of Personnel and Training (DoPT) is reportedly investigating as many as 39 IAS officers for their alleged involvement in corruption and other irregularities. Besides the 39 IAS officers, 29 from the Central Secretariat Service are also facing disciplinary proceedings. Inquiries were started against the 68 officers on the basis of complaints against them and after reviewing their service records. Some of them are said to be working at senior levels. The central government conducts a review of its staff as part of its efforts to constantly improve governance. According to norms, a government employee's performance is reviewed twice during service - 15 years after qualifying for the service and then after 25 years - to remove deadwood from the system. In the last one year, the Centre has given compulsory retirement to 129 non-performing employees, including IAS and IPS officers. It has also undertaken an exercise to review the service records of about 67,000 employees to identify non-performers. Nearly 25,000 of these are from all India and Group A services - including the IAS, Indian Police Service (IPS) and Indian Revenue Service (IRS). There are about 48.85 lakh central government employees, according to latest data.