Calpers Pension Reduces Social Security Pay? in 403(b) Forum Posted April 12, 2014 · Report reply My wife checked again and found that she was mistaken. Whew! The WEP docs on the Social Security site says: If you work for an employer who does not withhold Social Security taxes from your salary, such as a government agency or an employer in another country, any pension you get based on that work may reduce your Social Security benefits. Since my paychecks always had SS deductions, I'm ok.