Q. I am a FERS employee who will retire in 2016 under the 20 years by age 60 rule. I went part time in 2010, with my official tour being 20 hours per week (40 per pay period); however, I usually work 24-30 hours per week due to clinic needs. I get paid for these unscheduled hours. I know my annuity will be prorated to account for my part-time work during my career; however, will the part-time portion be calculated using my official tour of 40 hours per pay period, or will the part-time calculations use the actual number of…