The Bipartisan Budget Act of 2015 made some changes to Social Security's laws about filing for retirement and spousal benefits. Retirement plan guides for all Department of Retirement System plans including rules and benefit information for Washington State DRS pension customers.You can apply up to 4 months before you want your retirement benefits to start. Your first step is to request a benefit estimate from DRS. You must be at least 62 for the entire month to receive benefits. Percentages are approximate due to rounding. As the full retirement age goes up, benefits claimed at earlier ages go down. You must submit an online UW Retirement Application within 6 months of your UW separation date and no later than 60 days after the separation date. To get information about filing a claim, telephone 1-800-772-1772 toll-free from anywhere in the State of Washington. Eligibility is always based on work.