Without cost-of-living adjustments (COLA), pension payments lose significant purchasing power over time. While the exact “22% shrinkage” figure requires specific source context, the underlying risk is real: a retiree receiving a fixed pension of $3,000 per month at age 65 would find that payment worth only about $1,650 in equivalent purchasing power by age 85 if inflation averages just 3% annually. This erosion happens silently—the check amount never changes, but what it buys steadily shrinks.
The difference between having COLA protection and not having it can mean the distinction between maintaining retirement security and gradually slipping into financial hardship. The core problem is a two-tier system in American retirement. Approximately 75% of state and local government pension plans provide automatic COLA adjustments, while only 9% of private sector employees with traditional pensions receive any automatic inflation protection at all. This gap has widened since 2008, when many states—including Colorado, Florida, Maine, Maryland, Minnesota, New Jersey, New Mexico, Oregon, and South Dakota—reduced or eliminated COLA guarantees for newly hired workers to manage long-term pension liabilities.
Table of Contents
- How COLA Protections Shield Against Inflation Erosion
- Why Private Sector Pensions Are Most Vulnerable
- Federal Employee Pensions and Partial Protection
- Assessing Your Plan’s COLA Provisions and Coverage
- The Hidden Risk of State and Local Plan Reductions
- COLA Formulas and Their Real-World Impact
- Planning for Inflation-Protected Retirement Income
- Conclusion
How COLA Protections Shield Against Inflation Erosion
COLA (Cost-of-Living Adjustment) mechanisms work by periodically increasing pension payments to match inflation, typically measured against the Consumer Price Index. Without COLA, a pension payment locked at today’s dollar value becomes worth progressively less each year. At a steady 3% inflation rate, a dollar loses approximately 25% of its purchasing power over 10 years and roughly 50% over 20 years. For someone who retired at 65 with a $3,000 monthly pension and lives to 85, that payment’s real value drops to about $1,650 in today’s dollars—a 45% reduction in what groceries, utilities, and medical care actually cost.
The difference between plans with and without COLA is stark when examined over a 20-year retirement. A plan providing an annual 2.5% COLA adjustment maintains nearly 70% of the original purchasing power, while a no-COLA plan retains only 55% under the same inflation scenario. This gap compounds year after year. What started as an affordable fixed payment becomes an inadequate one, particularly for retirees living on modest pensions who cannot easily supplement income through work or investments.
Why Private Sector Pensions Are Most Vulnerable
The stark reality is that private sector retirees are far more exposed to inflation risk than their public sector counterparts. Only 9% of private sector employees with traditional pension plans receive automatic COLA adjustments, meaning the vast majority face the full brunt of inflation without protection. This disparity exists because private employers often view COLA commitments as open-ended liabilities that complicate pension funding calculations, while state and local governments treat them as part of the basic retirement promise.
This vulnerability became especially acute after 2008, when pension funding shortfalls forced many public employers to restrict COLA protection for new hires. A teacher hired by a state government today may receive no automatic inflation adjustment, while one hired in 2006 does. Even worse, some plans cap COLA adjustments at a percentage lower than actual inflation—providing a 2% COLA cap when inflation averages 4%, still leaving a 2% annual gap. The limitation is often invisible until the retiree is years into retirement and finds themselves constantly cutting back on discretionary spending.
Federal Employee Pensions and Partial Protection
Federal employees face a more nuanced situation. In 2026, federal CSRS (Civil Service Retirement System) retirees are receiving a 2.8% COLA increase, while FERS (Federal Employees Retirement System) retirees received a 2.0% increase. However, FERS has a structural weakness: its COLA automatically caps at the amount by which inflation exceeds 3%. When inflation runs at 4% or 5%, FERS retirees receive 3% or 4% COLA respectively—always 1 percentage point behind true inflation.
This design was intended to reduce long-term government liabilities but effectively shifts inflation risk to retirees during high-inflation years. The gap between CSRS and FERS COLA protections matters significantly for federal workers. A CSRS retiree retiring in 1990 with a $2,500 monthly pension now receives approximately $5,200 monthly after decades of full COLA adjustments. A similarly situated FERS retiree, due to the 1% FERS cap, would receive roughly $4,950—a difference that compounds into substantial losses over a 30-year retirement. For federal employees, understanding which retirement system they’re enrolled in is critical to assessing long-term income security.
Assessing Your Plan’s COLA Provisions and Coverage
If you receive a pension, the first step is to determine whether your plan includes COLA protection and, if so, what form it takes. Check your plan’s Summary Plan Description (SPD) or contact your pension plan administrator directly. Ask three specific questions: Does your plan provide automatic annual COLA adjustments? If yes, is it tied to the Consumer Price Index or a set percentage? Are there caps on how much COLA can increase annually? Some plans provide full CPI COLA, others cap it at 2%, 3%, or 5% annually.
A 3% annual cap sounds reasonable until inflation reaches 4% or 5%, at which point you’re automatically losing ground. For those still working and accumulating pension benefits, union contracts and employer pension plans sometimes allow workers to opt into supplemental individual retirement accounts (IRAs or 403(b)s) to create a personal inflation hedge. This approach lets you offset the lack of COLA protection in your pension by investing additional retirement savings in assets that historically keep pace with inflation. The tradeoff is discipline and contribution amounts—you must consistently save in addition to your pension accumulation, but the payoff is a more robust inflation-resistant retirement income.
The Hidden Risk of State and Local Plan Reductions
Since 2008, the trend toward restricting COLA benefits has accelerated among struggling state and local pension systems. When Colorado, Florida, New Jersey, and other states modified their plans, they typically exempted current retirees (protecting those already collecting) while eliminating or reducing COLA for future hires. This creates a dangerous gap: newer public employees will retire into less inflation protection than colleagues who retired just years earlier.
A firefighter hired in 2009 may enjoy full COLA adjustments, while one hired in 2010 might receive none. The limitation of this strategy—from a worker’s perspective—is that it signals a long-term shift away from inflation-protected pensions. If you are a younger worker in a public pension system, it’s worth investigating whether your jurisdiction has already restricted COLA for your cohort and, if so, planning accordingly by saving additional retirement funds outside the pension system. Some states have created tiered systems where full-time employees get partial COLA while part-time workers get none, creating further inequity within the same organization.
COLA Formulas and Their Real-World Impact
COLA formulas vary dramatically and have outsized real-world impact. Some plans use “3% compound annual COLA”—meaning 3% stacked on 3% each year, which approximates inflation tracking. Others use “3% simple annual COLA”—3% of the original pension amount, never compounding, which falls far behind inflation over time. A retiree with a simple COLA formula and 3% annual adjustments would see a $3,000 pension grow to only $3,900 after 10 years, while compound COLA would reach approximately $4,030.
In year 25, simple COLA would yield $4,875, while compound COLA would reach $6,375—a 30% difference driven purely by the formula structure. The worst-case COLA formula found in some plans is a “discretionary COLA,” where the plan sponsor decides annually whether to provide any increase at all, usually tied to pension fund performance. During market downturns or funding shortfalls, these discretionary COLAs are skipped entirely, leaving retirees absorbing 100% of inflation risk in years when the pension fund struggles. Understanding whether your COLA is guaranteed by law or discretionary is essential; guaranteed COLA provides true protection, while discretionary COLA offers only hope.
Planning for Inflation-Protected Retirement Income
The demographic reality is that inflation will not disappear and life expectancies continue to extend. A 65-year-old today faces a reasonable probability of living another 25+ years, meaning the cumulative impact of inflation matters enormously. For those with non-COLA pensions or inadequate COLA protection, diversifying income sources becomes critical.
Social Security itself includes full COLA protection (tied to the Consumer Price Index), so maximizing Social Security benefits by delaying claiming to age 70 creates an inflation-protected income floor. Looking forward, the employee benefits landscape is shifting away from traditional pensions entirely, with more employers offering 401(k) plans that provide no guaranteed income or COLA protection whatsoever. This forces workers to become their own inflation hedgers, which requires investment knowledge many retirees lack. For younger workers, the transition away from COLA-protected pensions toward self-directed retirement accounts represents a fundamental shift in retirement risk—from the employer bearing inflation risk to the individual worker bearing it entirely.
Conclusion
Pension payments without COLA protection experience measurable erosion in purchasing power, losing roughly 25% over a decade at 3% inflation and substantially more over a full retirement lasting 25+ years. The gap between plans with COLA protections (covering 75% of public sector workers but only 9% of private sector workers) and those without creates a two-tier retirement security system.
Since 2008, the trend has moved toward restricting COLA access, particularly for newly hired public employees, narrowing the percentage of workers with true inflation protection. If you receive or expect to receive a pension, take these steps: confirm your plan’s COLA status and formula in writing; understand whether your COLA is guaranteed or discretionary; assess whether your COLA will keep pace with realistic inflation assumptions; and if protection is inadequate, plan supplemental retirement savings in inflation-sensitive assets like equities, Treasury Inflation-Protected Securities (TIPS), or I Bonds. The difference between proactive planning now and hoping your fixed pension remains adequate is the difference between secure retirement and financial stress.