Many employees apparently remain concerned that the shutdown will impact their future retirement benefits despite assurances that it won’t. Here’s OPM’s explanation: “An aggregate nonpay status of 6 months in any calendar year is creditable service. Coverage continues at no cost to the employee while in a nonpay status. When employees are in a nonpay status for only a portion of a pay period, their retirement deductions are adjusted in proportion to their basic pay. High-3 average salary computations are based on periods of creditable service. Thus, periods of nonpay status of 6 months or less in a calendar year that fall within an employee’s average salary period are included in the calculation of the average salary using the rate of basic pay in effect during the period of nonpay status.”