Veterans receiving disability pay and military retirees will see a 2.8 percent cost-of-living boost starting in December, their largest increase in six years. On Thursday, Social Security Administration officials announced that the cost-of-living adjustment for 2019 for their beneficiaries will be 2.8 percent, the biggest increase since 2012. Last year the increase was 2 percent, and the previous three years were only 2 percent combined.