Phased Retirement Could Help You Transition Gently—But You Need to Understand the Rules First

Missy E
November 14, 2025

Key Takeaways

Phased retirement allows eligible government employees to transition into retirement gradually while continuing part-time work and receiving partial pension credit.
Participation is not automatic; agency approval, eligibility conditions, and a formal agreement are required before starting phased retirement.

Understanding Phased Retirement in the Public Sector

Phased retirement is not simply cutting back your hours. It’s a formal, structured program available to certain public sector employees that allows you to ease into retirement by working part-time while beginning to receive partial pension benefits. This option is particularly valuable if you want a smoother transition into full retirement while still contributing your expertise and maintaining some income.

Implemented under the 2012 National Defense Authorization Act and rolled out in 2014, phased retirement has become an important alternative for eligible federal workers seeking flexibility toward the end of their careers. But it’s not automatic, and the rules surrounding it are strict.

Who Is Eligible?

Eligibility is tied to both your retirement system and your agency’s participation in the program. Here are the basic requirements in 2025:

You must be covered under either the Civil Service Retirement System (CSRS) or the Federal Employees Retirement System (FERS).
You must have met the age and service requirements for immediate retirement:
- CSRS: Age 55 with 30 years of service, or age 60 with 20 years, or age 62 with 5 years.
- FERS: Minimum Retirement Age (MRA) with 30 years, age 60 with 20 years, or age 62 with 5 years.
You must have been in a full-time position for at least three years before starting phased retirement.
Your agency must approve your application.
You must agree to work a 50% schedule (half-time).
You must commit to mentoring activities, if required.

How the Program Works

Phased retirement involves continuing part-time work while drawing partial annuity payments. This structure is unique compared to traditional retirement:

You receive 50% of your full pension annuity.
You work part-time (typically 20 hours per week).
You continue to accrue retirement credit based on your part-time service during phased retirement.
You are not eligible for Social Security during phased retirement unless you are already drawing benefits.
You cannot make phased retirement your permanent status—it is a bridge to full retirement, not a long-term arrangement.

What Happens to Your Pension?

During phased retirement, your pension is calculated in two parts:

Initial Phase: You receive 50% of the annuity you would have received had you fully retired at the start of phased retirement. This amount is based on your current high-3 salary and years of service.
Final Phase: Once you fully retire, a new annuity calculation is done. It takes into account the additional part-time service accrued during phased retirement, effectively giving you a boost in your final retirement benefit.

You will not receive cost-of-living adjustments (COLAs) on the partial annuity during phased retirement. COLAs only apply once you enter full retirement status.

How Long Can It Last?

There is no fixed nationwide duration limit, but in practice, most phased retirements last between six months to two years. Agencies may impose their own restrictions. Some may require full retirement within a set period, while others may offer flexible timelines.

Importantly, you can’t remain in phased retirement indefinitely. Your agreement should include a proposed end date or at least a mutual understanding of the timeline. At the end of your phased retirement, you must transition to full retirement status.

Impact on Health and Insurance Benefits

One of the most attractive features of phased retirement is that you maintain access to the same federal benefits you had as a full-time employee:

FEHB (Federal Employees Health Benefits): You remain eligible for coverage, and the government continues to pay its share of your premium.
FEGLI (Federal Employees’ Group Life Insurance): Your coverage continues, though you may want to review your coverage level due to the part-time status.
TSP (Thrift Savings Plan): You can continue contributing, and agency matching continues for FERS participants.
Annual and Sick Leave: You accrue leave at the same rate (on a pro-rata basis).

However, you are no longer eligible to receive recruitment or retention bonuses, relocation incentives, or student loan repayments during phased retirement.

Mentoring Requirement

One defining element of phased retirement is the expectation of mentoring. This requirement is meant to ensure knowledge transfer between experienced professionals and newer employees. You must spend a significant portion of your part-time hours in mentoring activities, though what qualifies may vary by agency.

The mentoring must be documented and included in your phased retirement agreement. Failure to fulfill this condition could jeopardize your eligibility.

Application Process and Agency Discretion

Phased retirement is not an entitlement. Agencies have full discretion to allow or deny participation. Even if you meet all the criteria, your agency must:

Have adopted the phased retirement program.
Have a business need for retaining your expertise in a part-time capacity.
Approve your proposed mentoring plan.

To apply:

You must submit a written request to your agency.
HR will confirm your eligibility and help draft the phased retirement agreement.
The agreement will specify:
- Work schedule
- Mentoring duties
- End date (if any)
- Conditions for transition to full retirement

TSP Withdrawals and RMDs During Phased Retirement

You are considered an active employee while in phased retirement, so you generally may not withdraw from your TSP unless you are over age 59½ and meet withdrawal criteria. Required Minimum Distributions (RMDs) do not begin until after you fully retire. This can be advantageous for those trying to delay taxable distributions.

Social Security Coordination

If you are a FERS retiree and have reached age 62, you may already be eligible for Social Security. However, the FERS Special Retirement Supplement is not payable during phased retirement. You only become eligible for the supplement after full retirement if you meet the standard criteria.

This makes it important to align your Social Security claiming strategy with your phased retirement timeline to avoid gaps or miscalculations.

When to Consider Phased Retirement

Phased retirement is not right for everyone. Consider it if:

You want to remain engaged in the workforce without full-time pressure.
Your agency supports the program.
You’re interested in mentoring and training others.
You want to test retirement financially and emotionally.

Avoid phased retirement if:

You require the full pension income immediately.
You have other retirement goals that require more flexibility.
Your agency doesn’t offer the program or denies your application.

Potential Drawbacks to Watch For

While phased retirement can be a useful tool, it comes with limitations you need to weigh:

No COLAs on the partial annuity during the phased period.
Some benefits and incentives are restricted.
Agency discretion means you could be denied even if eligible.
Mentoring requirements may not align with your preferences.

You should also consider the potential impact on your spouse’s retirement coordination, survivor benefits, and your estate planning.

Ending Phased Retirement and Fully Retiring

When you decide—or are required—to end phased retirement, you transition to full retirement. This process typically involves:

A formal retirement application (again through your agency).
A recalculation of your annuity, now including the service time earned during phased retirement.
Termination of active employee benefits and shift to retiree status.

Plan ahead for this step to ensure a smooth conversion of your benefits and avoid administrative delays.

Why a Careful Strategy Matters

The structure and rules of phased retirement offer both flexibility and complexity. A misstep—such as failing to understand your agency’s participation policy or overlooking the mentoring requirement—can derail your plans. Worse, you might end up with a lower pension than expected or lose access to vital benefits.

Your phased retirement strategy should align with:

Your personal retirement goals
Your financial readiness
Agency requirements and expectations
Social Security coordination
Survivor benefit planning

It’s crucial to review your plans with a knowledgeable advisor before initiating the phased retirement process.

Take the Time to Plan Before You Commit

Phased retirement gives you the chance to transition on your own terms—but only if you fully understand the conditions. Review your eligibility, talk with HR, and prepare a realistic timeline that aligns with your long-term goals. Even a flexible retirement needs a solid structure to support it.

To explore how phased retirement fits into your overall retirement planning, speak with a licensed agent listed on this website. They can walk you through your options and help prevent avoidable errors.