At the end of each year, we'll mail you a Social Security. Benefit Statement (Form SSA-1099) that shows the amount of benefits you received.You must be at least 62 for the entire month to receive benefits. Percentages are approximate due to rounding. Will my City pension impact my Social Security retirement benefit? Because you will receive a government pension, the amount of Social Security benefits for which you or your spouse will be eligible may be impacted. You do not need to be Social. Security age to collect your CalPERS pension . Eligibility Requirements. Age may be just a number, but it's an important one for Social Security retirement benefits.