The federal government pays out millions of dollars to dead people each year - including deceased retired federal workers, according to a new report. In the past five years, the Office of Personnel Management has made more than $601 million in benefits payments to deceased federal annuitants, according to the agency's inspector general. Total annual payouts range between $100 million and $150 million. Improper payments to dead retirees increased 70 percent in the past five years, far higher than the 19 percent climb in overall annuity payments, the report said. In one case, a deceased annuitant's son continued receiving federal benefits until 2008 - 37 years after his father's death. OPM learned about the improper payments - which exceeded $515,000 - only after the son died. The agency never recovered the money. Overall, the government's improper payments totaled about $125 billion in fiscal 2010 - a $15 billion year-to-year increase. Last October, an investigation by the office of Sen. Tom Coburn (R-Okla.) concluded that the government had paid nearly $1 billion to at least 250,000 dead people since 2000.