Key Takeaways
- Phased retirement lets eligible federal employees reduce work hours while beginning partial pension payments and continuing to build benefits.
- The program has specific eligibility, mentoring, and benefits rules, impacting TSP contributions, pension calculations, and insurance coverage.
Phased retirement offers a gradual transition from full-time federal service to full retirement. If you’re considering this program in 2026, understanding the official rules, how eligibility is determined, and how benefits like your TSP are impacted will help you make confident, informed decisions.
What Is Phased Retirement?
Definition and federal origins
Phased retirement is a formal program within the federal government that allows eligible employees to work on a part-time schedule while beginning to draw a portion of their federal pension. The initiative was established by the Moving Ahead for Progress in the 21st Century Act (MAP-21) in 2012 and implemented through Office of Personnel Management (OPM) regulations. It aims to help employees transition gradually toward retirement while leveraging their expertise through a structured mentoring requirement.
Current status of the program
As of 2026, phased retirement remains an option for eligible participants in federal agencies that have adopted the program. While agency participation is not universal, the framework is well-defined at the federal level. According to OPM, actual usage remains low, but the program continues to provide value, particularly for specialized or knowledge-intensive roles.
Who Qualifies for Phased Retirement?
Eligibility criteria in 2026
To qualify for federal phased retirement in 2026, you must be a full-time federal employee under the Civil Service Retirement System (CSRS) or the Federal Employees Retirement System (FERS). The following conditions apply:
- You must have at least 30 years of federal service and be at least 55 years old (FERS) or 60 years old with 20 years of service.
- Your employing agency must participate in the phased retirement program and approve your application.
- You must agree to a part-time schedule (typically 50% of full-time hours) and to fulfill program requirements, including a mentoring component.
Who is excluded from the program?
Some federal employees are not eligible for phased retirement. Exclusions generally include:
- Employees in positions that require full-time work for mission-critical duties
- Certain law enforcement, firefighter, and air traffic control roles
- Employees working under non-appropriated fund instruments
- Anyone whose agency has not adopted phased retirement
It is important to review your agency’s policies and consult official documentation to confirm your eligibility.
What Are the Official Program Rules?
Work hour requirements
During phased retirement, you are required to work on a part-time basis, generally set at 50% of your regular full-time schedule. The program expects your part-time schedule to be consistent, although some limited flexibility may be allowed, depending on agency practices.
Mandatory mentoring component
A core feature of phased retirement is the requirement to devote 20% of your work schedule to mentoring activities. The intent is to facilitate knowledge transfer and skill development for other employees. Agencies are responsible for providing mentoring opportunities and verifying your participation as a condition of your status.
Leave and benefits implications
You continue to accrue annual and sick leave, although these are prorated to your part-time schedule. Your overall creditable service and benefits accumulate at a reduced rate due to reduced work hours. Health and life insurance benefits (if you remain eligible) typically continue as if you were a part-time employee, using the same cost-sharing formulas.
How Does TSP Change During Phased Retirement?
TSP contributions and withdrawals
You may continue to contribute to your Thrift Savings Plan (TSP) from your reduced salary, subject to federal contribution limits. Your agency will continue to process elective deferrals and, if you are FERS, agency automatic and matching contributions. However, the amount contributed will reflect your part-time income. TSP withdrawals are not generally allowed while you remain federally employed, even during phased retirement.
Impact on investment options
Your investment choices within the TSP are unaffected by phased retirement. You can continue to reallocate your account balance or change investment funds, following TSP policies.
Service credit and TSP matching
Time spent in phased retirement counts as federal service, but only at the part-time rate. For TSP purposes, FERS employees continue to receive automatic and up-to-5% matching contributions, based on their reduced salary. Service time is used in calculating agency matching and vesting rules under TSP.
How Is Pension Calculated in Phased Retirement?
Two-part pension formula
OPM uses a two-component formula to calculate your federal pension when you transition from phased to full retirement:
- A phased retirement benefit, based on your high-three salary and years of service at the time you enter phased retirement, prorated for part-time work.
- A final retirement benefit, reflecting additional part-time service accrued during phased retirement, calculated at your salary earned during that period.
Your combined annuity reflects both parts and ensures service and earnings during phased retirement are credited appropriately.
Service computation rules
All part-time service during phased retirement is credited on a prorated basis toward your total federal service. OPM’s formula ensures your benefits proportionally reflect any reduced work schedule without loss of previously accrued full-time service.
Potential impact on annuity timing
The commencement of a phased retirement annuity is immediate upon entering phased status, and is then replaced or adjusted when you fully retire. If you move to full retirement earlier than planned, your combined annuity is recalculated based on all service up to that point.
Are Health and Life Insurance Affected?
FEHB and FEGLI continuation
Generally, you retain eligibility for Federal Employees Health Benefits (FEHB) and Federal Employees’ Group Life Insurance (FEGLI) on the same basis as other part-time workers. Premiums and government contributions are prorated to your scheduled hours compared to full-time employment, but coverage itself is not reduced. Maintaining enrollment throughout phased retirement is required to continue benefits into full retirement.
Medicare and Social Security considerations
Your Social Security coverage, if applicable, continues based on your actual earnings during phased retirement, with payroll taxes withheld accordingly. For Medicare, your eligibility is guided by federal law, and phased retirement status does not interrupt your ability to enroll at age 65 or later.
What Are the Pros and Cons of Phased Retirement?
Benefits for employees and agencies
Phased retirement creates a smoother, less abrupt transition to full retirement. As an employee, you can begin receiving part of your federal pension while still earning income and accruing additional service credit. Agencies benefit from retained employee expertise and structured mentoring for the next generation of workers, supporting knowledge transfer and mission continuity.
Possible drawbacks or limitations
Downsides include a proportional reduction in pay and future benefits, since both salary and pension accruals are based on part-time service. Availability depends on agency adoption. Additionally, once you begin phased retirement, the rules for returning to full-time status or changing course are limited and may not be reversible.
