The Civil Service Retirement System (CSRS) was established by P.L. 66-215 in 1920, 15 years before Congress created the Social Security system for workers in the private sector. Because CSRS was designed to provide both retirement and disability benefits, federal employees were excluded from participating in Social Security. State and local governments were permitted to bring their employees into the Social Security program in the early 1950s, and today about three-fourths of state and local government employees are covered by Social Security. In the Social Security Amendments of 1983 ( P.L. 98-21 ), Congress mandated participation in Social Security by all civilian federal employees initially hired on or after January 1, 1984. To coordinate federal employee retirement benefits with Social Security, Congress directed the development of a new federal employee retirement system with Social Security as the cornerstone. The result of this effort was the Federal Employees' Retirement System (FERS) Act of 1986 ( P.L. 99-335 ). FERS is composed of three elements: (1) Social Security, (2) the FERS basic retirement annuity, and (3) the Thrift Savings Plan (TSP). Most permanent federal employees hired after December 31, 1983, are enrolled in the FERS, as are employees who voluntarily switched from CSRS to FERS during "open seasons" in 1987 and 1998. Under FERS, workers who have completed at least 30 years of service can retire at the plan's minimum retirement age. The minimum retirement age was 55 for workers born before 1948, and it is scheduled to rise to 57 for those born in 1970 or later. In 2018, the minimum retirement age is 56. Employees with 20 or more years of service can retire at the age of 60, and those with at least 5 years of service can retire at the age of 62. Federal employees and former employees who have completed at least 10 years of service can receive a reduced FERS annuity at the minimum retirement age. For those who choose this option, the FERS annuity is permanently reduced by 5% multiplied by the number of years between the worker's age at retirement and the age of 62. For example, the FERS annuity of an employee who retires at the age of 56 with fewer than 30 years of service would be permanently reduced by 5% multiplied by six, or 30%. Under CSRS, the minimum retirement age is 55 for employees with 30 years of federal service, 60 for those with 20 years of service, and 62 for employees with at least 5 years of service. CSRS has no provision for early retirement with a reduced benefit, except for special circumstances such as a reduction in force. Agencies undergoing a reduction in force can, with the approval of the Office of Personnel Management, offer retirement to employees aged 50 or older with 20 or more years of service or at any age with 25 or more years of service. An employee under CSRS who is offered and accepts an offer of voluntary early retirement has his or her retirement annuity permanently reduced by 2% multiplied by the number of years between the worker's age at retirement and the age of 55. Under both CSRS and FERS, the amount of an employee's retirement annuity is based on the average of the individual's highest three consecutive years of basic pay multiplied by his or her years of service and the rate at which benefits accrue for each year of service. Under FERS, the accrual rate is 1% of basic pay for each year of service. Workers with 20 or more years of service who retire at the age of 62 or later are credited with an accrual rate of 1.1% for each year of service. For example, a worker under FERS who retires at 61 with 29 years of service will receive a FERS annuity equal to 29% of his or her high-three average pay. Delaying retirement by one year would increase the annuity to 33% of high-three average pay (30 x 1.1 = 33.0). Under CSRS, the benefit accrual rate increases with length of service. Workers accrue benefits equal to 1.5% of high-three average pay for each of the first 5 years of service; 1.75% for the 6 th through 10 th years of service, and 2.0% of high-three average pay for each year of service after the 10 th year. This yields a pension equal to 56.25% of high-three average pay for 30 years of federal service under CSRS. Accrual rates are lower under FERS than under CSRS because employees under FERS also earn Social Security retirement benefits. For all federal workers enrolled in FERS, the agencies where they are employed contribute an amount equal to 1% of the employees' basic pay to the TSP, even if the employees make no voluntary contributions to the TSP. In 2018, workers under FERS or CSRS can contribute up to $18,500 to the TSP. Workers aged 50 and older can contribute an additional $6,000 to the TSP. Except in the case of the Roth TSP option, all contributions to the TSP are made on a pre-tax basis, and neither the employee's contribution nor any investment earnings are taxed until the money is withdrawn from the account. Under the Roth TSP option, however, employee contributions are made with after-tax income. Qualified distributions from the Roth TSP option--generally, distributions taken five or more years after the participant's first Roth contribution and after he or she has reached the age of 59 1/2--are tax-free. In addition, the first 5% of employee pay contributed to the TSP generates agency matching contributions for workers under FERS. Workers who are under CSRS can contribute to the TSP, but they receive no matching contributions from their employing agencies. Because enrollment in CSRS has been closed to new entrants since 1984, the proportion of federal workers covered by FERS has been rising and coverage under CSRS has been declining. (See Table 1 .) FY1995 was the first year in which a majority of civilian federal employees (51%) were enrolled in FERS. In FY2016, 94.1% of federal employees were enrolled in FERS. Although the majority of current federal employees are enrolled in FERS, most retired federal workers and their surviving dependents receive benefits that were earned under CSRS. In FY2016, 71.5% of employee annuitants were receiving pension benefits that were accrued under CSRS, whereas 28.5% had retired under FERS. (See Table 2 .) The number of FERS annuitants is comparatively small because the FERS is still a relatively new program when compared with the average length of a worker's career. The program was established by the Federal Employees' Retirement System Act of 1986, and was made retroactive for all employees initially hired on or after January 1, 1984. Approximately 2.6 million people received civil service annuities in FY2016, either as retired federal employees, surviving spouses, or surviving dependents. California had the largest number of annuitants with 215,115 and Vermont had the fewest with 4,649. Five states--California, Texas, Florida, Maryland, and Virginia--accounted for about one-third of all civil service annuitants in FY2016. (See Table 3 .) In FY2016, 99,242 civilian federal employees (including U.S. Postal Service employees) retired. (See Table 4 .) Of this number, 78,832 (79.4%) were normal retirements and another 1,099 (1.1%) were voluntary early retirements. Under CSRS, normal retirement can occur as early as the age of 55 for an employee with 30 years of service. Under FERS, the minimum retirement age is currently 56 years old, and is scheduled to increase to 57 years old for workers born in 1970 or later. Under both programs, normal retirement can be taken at the age of 60 with 20 years of service or the age of 62 with five years of service. The average age of workers taking voluntary, normal retirement in FY2016 was 62.1 for employees under CSRS and 63.4 for those under FERS. Workers taking normal retirement under CSRS in FY2016 had completed an average of 37 years of service, whereas those retiring under FERS had an average of 22.2 years of service. More than 1,000 federal employees took voluntary early retirement in FY2016. These workers were younger on average (54.3 years old for CSRS employees; 54.5 years old for FERS employees) than those who took normal retirement. The average length of service for CSRS employees who took voluntary early retirement was less (31.9 years) than CSRS employees who took normal retirement (37.0 years). For FERS employees, however, the average length of service of individuals taking early voluntary retirement was greater (25.6 years) than that of FERS employees who took normal retirement (22.2 years). Approximately 6.7% of all retirements among federal employees in FY2016 were taken for reasons of disability. CSRS disability retirees were, on average, 53.2 years old with 25.1 years of service. The average age of FERS disability retirees, who had 13.6 years of service, was 50.5. Involuntary retirements (such as those resulting from agency down-sizing) accounted for 1.2% of all retirements by federal employees in FY2016. The average monthly annuity among civilian federal employees who retired under CSRS in FY2016 was $4,755, whereas new FERS annuitants received an average annuity of $1,714 per month. Employees retiring under CSRS received larger annuities than those covered by FERS both because of their longer average length of service and CSRS was designed to provide an adequate retirement income from a single source. FERS was designed to provide a smaller annuity than CSRS for any given length of service and level of compensation because federal employees under FERS participate in Social Security and they also can elect to save for retirement with agency matching contributions through the TSP. Employees enrolled in FERS who retire at the minimum retirement age or older with 30 years of federal service also receive a supplement to their FERS annuity between their retirement date and the age of 62. The supplement is equal to the Social Security benefit that they earned while employed by the federal government and enrolled in FERS. Employees who retire at the age of 60 or 61 with 20 or more years of service also receive this supplement. The FERS supplement terminates at the age of 62, regardless of whether the individual applies for Social Security at that age. In FY2016, the average age of federal employees taking normal retirement was 62.8, which was higher than in FY1990. (See Table 5 .) The average age for all retirements in FY2016 was 61.3, which was higher than in FY1990 (59.4). Federal agencies undergoing a major reorganization can request permission from the Office of Personnel Management to offer their employees voluntary early retirement or voluntary separation incentive payments ("buyouts"). Under voluntary early retirement, an employee with 20 or more years of service can retire as early as the age of 50. Voluntary separation incentives are cash payments of up to $25,000 (before taxes) offered to employees who retire or otherwise separate from federal employment voluntarily. Because these incentives are generally offered to retirees who have not yet reached the combined age and years of service that are required for normal retirement, they tend to reduce the average age of employees who retire in any given year. The Civil Service Retirement and Disability Fund (CSRDF) paid annuities to 2,077,804 retired federal employees (also referred to as employee annuitants ) and 533,884 survivor annuitants in FY2016. Of these beneficiaries, 1,867,904 individuals (71.5%) received benefits earned under CSRS and 743,784 (28.5%) received benefits under FERS. Employee annuitants under CSRS received a median monthly annuity of $3,118. Survivors of CSRS annuitants received a median monthly CSRS annuity of $1,396. Employee annuitants under FERS received a median monthly payment of $1,082. The median survivor benefit under FERS was $432. As was noted earlier, FERS benefits are smaller than those under CSRS both because employees retiring under FERS had fewer years of service than workers who retired under CSRS, and because FERS benefits are intended to be supplemented by Social Security and the TSP. Cost-of-living adjustments (COLAs) for both CSRS and FERS are based on the rate of inflation as measured by the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). COLAs are determined by the percentage change in the average monthly CPI-W during the third quarter (July to September) of the current calendar year compared with the third quarter of the last year in which a COLA was applied. If consumer prices as measured by the CPI-W do not increase (or if they decrease) between the third quarter of the base year and the third quarter of the current calendar year, there is no COLA for annuities paid under CSRS or FERS (and the base year used for the COLA calculation remains the last year that a COLA was applied). The "effective date" for COLAs is December, but they first appear in benefit checks issued in January. Under FERS, COLAs are paid only to retired workers who are 62 or older and to disabled and survivor beneficiaries of any age. COLAs paid under FERS are less than the rate of inflation whenever the increase in the CPI-W is greater than 2.0%. If the rate of inflation during the measurement period is between 2.0% and 3.0%, the FERS COLA is 2.0%. If inflation is greater than 3.0%, then the COLA for FERS benefits is equal to the CPI-W minus one percentage point. These limits do not apply to the CSRS COLA. From the third quarter of 2017 to the third quarter of 2018, the CPI-W increased by 2.0%. Therefore, the CSRS COLA beginning in January 2018 is 2.0%. The January 2018 FERS COLA is also 2.0%. (See Table 7 .) The CSRDF began FY2016 with a balance of $864.5 billion. By law, these assets are invested in special-issue U.S. Treasury bonds. The balance of the trust fund represents budget authority available to pay benefits under both CSRS and FERS. The fund's end-of-FY2016 balance of $879.8 billion was more than 10 times the value of the CSRS and FERS annuities paid from the fund that year. (See Table 8 .) The CSRDF receives income from several sources. Some of the fund's income results from cash transactions. Other income comes from intra-governmental transfers. The largest cash transaction ($3.2 billion in FY2016) consists of employee contributions to CSRS and FERS. These contributions are equal to 7.0% of base pay under CSRS; 0.8% of base pay under FERS for employees first hired before 2013; 3.1% of pay under FERS for employees first hired in 2013; and 4.4% of pay under FERS for employees first hired after 2013. Smaller cash payments are received from the District of Columbia to finance retirement benefits for its employees and from additional cash contributions made by federal workers. These usually are former federal employees who are returning to government service and who had previously withdrawn their retirement contributions. The CSRDF's largest sources of income are (1) annual payments from the general fund of the Treasury to make up for the insufficient funding of benefits accrued under CSRS, (2) payments from federal agencies and the Postal Service on behalf of their employees, and (3) interest payments on the U.S. Treasury bonds it holds. Agency contributions under CSRS are equal to 7.0% of payroll, and are supplemented by transfers from the general fund of the Treasury equal to approximately 12% of payroll. Agency contributions to FERS are required by law to be equal to the full actuarial cost of the program minus employee contributions. Effective FY2015, employing agencies contribute 13.7% of payroll on behalf of FERS employees first hired before 2013, and 11.9% of pay on behalf of FERS employees first hired in 2013 or later (including individuals hired in 2014 or later). These three sources of income are intra-governmental transfers that increase the fund's budget authority, as recorded in the accounts of the U.S. Treasury. The fund receives Treasury bonds as a record of this budget authority, which it redeems periodically as annuity payments come due. Expenditures from the CSRDF consist mainly of payments to retired federal employees and their surviving dependents. Annuity payments totaled $82.5 billion in FY2016. Payments to the estates of decedents and payments to separating employees accounted for another $330 million. The administrative expenses of the fund were $142 million, or 0.2% of obligations. Between FY1990 and FY2018 (estimated), the balance of the CSRDF rose from $238 billion to $972 billion, an increase of 308%. (See Table 9 .) The balance of the fund has been rising partly because the civil service retirement programs are in a long-term transition from pay-as-you-go financing under CSRS to advance-funding under FERS. Until 1969, CSRS benefits were funded on a pay-as-you-go basis with a small reserve equal to about one year of benefit payments to meet unexpected contingencies. Employee contributions and agency contributions were less than the actuarial value of the benefits that were accrued each year by federal employees. In 1969, P.L. 91-93 mandated annual payments to the fund from the general revenues of the U.S. Treasury to make up most of this shortfall. When Congress passed the legislation that created FERS in 1986, the law required that the full actuarial value of benefits accrued each year by federal employees under FERS (including the value of future COLAs) must be funded by the sum of employee and agency contributions. The Office of Personnel Management estimates that at some time in the 21 st century, the trust fund will reach a steady state in which it holds sufficient budget authority to finance about 18 to 20 years of retirement and disability benefits. The number of people receiving civil service annuity payments has risen more than 175% since 1970, but the rate of increase has slowed since 1985. (See Table 10 .)The rapid rise in the number of civil service annuitants from less than 1 million in 1970 to approximately 2 million in 1985 resulted from the increase in federal employment that occurred between 1940 and 1955. Throughout the 1930s, civilian federal employment (including postal employees) was less than 1 million. The first year in which there were more than 1 million people in the federal workforce was 1940. By 1955, civilian federal employment had reached 2.4 million. After 1955, civilian federal employment increased much more slowly. It reached nearly 3 million in 1970, due in part to the war in Vietnam and the creation of such large-scale social programs as Medicare and Medicaid in the 1960s. The slower but still steady increase in the number of federal employees in the years between 1955 and 1970 had as one of its consequences the steady increase in the number of civil service annuitants in the years since 1985. Between 1985 and 2016, the number of civil service annuitants rose from just under 2 million to just over 2.6 million. Expenditures for civil service annuities have grown by a greater percentage than the number of annuitants because they are affected not only by the number of people employed by the federal government, but also by increases in average life-span, growth in real wages, and inflation. Cost-of-living adjustments--which have been applied to civil service annuities since 1962--increase the nominal value of civil service annuities, but do not increase the real value of these annuities. COLAs are intended to keep purchasing power from eroding due to the effects of inflation. Under current law, the real value of a civil service annuity either remains constant (CSRS) or declines (FERS) during retirement. Rates of increase in the "high-three" average pay of retiring federal employees (on which these annuities are based) are in turn affected by (1) adjustments to pay for each grade-and-step level, (2) special pay increases such as locality pay adjustments, (3) the distribution of federal employees among various grade-and-step levels over time, and (4) average length of service (because each additional year of service tends to increase the high-three average pay). The average real value of civil service annuities per annuitant can be expected to decline in the future as a growing number of new retirees will be workers who were enrolled in FERS rather than CSRS. FERS annuities are smaller than CSRS annuities, but they are supplemented by Social Security benefits and the TSP. Between FY1994 and FY2013, the number of civilian federal employees (including the U.S. Postal Service, which participates in both CSRS and FERS) fell from 2,972,000 to 2,731,000. (See Table 11 .) Civilian federal employment outside the Postal Service fell from 2,149,000 in FY1994 to 1,943,000 in FY2006, a decline of 9.6%. From FY2006 to FY2013, total federal employment rose from 2,700,000 to 2,731,000, an increase of 2.3%. Non-postal employment rose from 1,943,000 to 2,168,000, an increase of 11.6%. Much of the FY2006 to FY2013 increase in federal employment was driven by growth in the executive branch, which is the largest branch of government in terms of federal employees. The executive branch experienced an increase in employees over this period of 1.2% (2,637,000 employees in FY2006; 2,668,000 employees in FY2013). Employment in the judicial branch (34,000) exceeded employment in the legislative branch (29,000) in FY2013. From FY1994 to FY2013, employment in the legislative branch declined from 35,000 employees to 29,000 employees. Over the same period, employment in the judicial branch rose from 28,000 to 34,000 employees. Under CSRS, an employee with 30 or more years of service can retire with an immediate, unreduced annuity at the age of 55. The current minimum retirement age under FERS is 56. In both CSRS and FERS, an employee with 20 or more years of service can retire at the age of 60. About one in three federal employees will reach age 55 within 10 years, but not all of them will have 30 years of service at that age. Of those who have 30 or more years of service, not all will retire as soon as they are eligible. The average age among all federal employees who retired in FY2016 was 61.3. The average age among individuals who took normal retirement--as opposed to early retirement or disability retirement--was 61.8. Because CSRS has been closed to new entrants since 1984, the distribution of current CSRS employees is older than FERS. For example, there were no CSRS employees under the age of 45 as of September 2015. Thirty-eight percent of FERS employees, however, were under the age of 45 during this same period. Approximately 10% of CSRS employees and 33% of FERS employees were between the ages of 45 and 54. Although most CSRS employees (90%) were aged 55 or older, only 28% of FERS employees were aged 55 or older. (See Table 12 .)

Summary:
This report describes recent trends in the characteristics of annuitants and current employees covered by the Civil Service Retirement System (CSRS) and the Federal Employees' Retirement System (FERS) as well as the financial status of the Civil Service Retirement and Disability Fund (CSRDF). In FY2016, 94% of current civilian federal employees were enrolled in FERS, which covers employees hired since 1984. Six percent were enrolled in CSRS, which covers only employees hired before 1984. In FY2016, more than 2.6 million people received civil service annuity payments, including 2,077,804 employee annuitants and 533,884 survivor annuitants. Of these individuals, 72% received annuities earned under CSRS. About one-third of all federal employee annuitants and survivor annuitants reside in five states: California, Texas, Florida, Maryland, and Virginia. The average civilian federal employee who retired in FY2016 was 61.3 years old and had completed 25.6 years of federal service. The average monthly annuity payment to workers who retired under CSRS in FY2016 was $4,755. Workers who retired under FERS received an average monthly annuity of $1,714. Employees retiring under FERS had a shorter average length of service than those under CSRS. FERS annuities are supplemented by Social Security benefits and the Thrift Savings Plan (TSP). At the end of FY2016, the balance of the CSRDF was $879.8 billion, an amount equal to more than 10 times the amount of outlays from the fund that year. The trust fund balance is expected to reach $909 billion by the end of FY2018. From FY1970 to FY1985, the number of people receiving federal civil service annuities rose from fewer than 1 million to nearly 2 million, an increase of 105%. Between FY1985 and FY2016, the number of civil service annuitants rose by 680,000, an increase of about 35%. In FY2013, the number of civilian federal employees, including Postal Service employees, totaled 3.3 million workers. This was 254,000 less than the number of employees in FY2000, and 480,000 fewer than the number of employees in FY1994. In FY2016, all CSRS employees were aged 45 or older, compared with 61% of FERS employees who were aged 45 or older (38.6% of FERS employees were younger than 45). Fifty five percent of CSRS employees were aged 60 or older, whereas 13% of FERS employees were in this age range. For a general overview of current benefits and financing under CSRS and FERS, see CRS Report 98-810, Federal Employees' Retirement System: Benefits and Financing. For summary information on recent reform proposals related to CSRS and FERS, see CRS In Focus IF10243, Civilian Federal Retirement: Current Law, Recent Changes, and Reform Proposals.