Authors: Tonya Manning Nathan Trotman
Retirement plans can easily be misunderstood and miscalculated. Not because of market volatility or inflation, but because they're built on a dangerous misconception: that people die exactly when statistics predict they will. Many of us will live much longer than average, and thus our retirement years require meticulous planning.
If your organization and employees are working around that median figure, you're essentially gambling with your future financial wellbeing. Basing retirement on an individual's life expectancy is a mistake — to properly prepare for retirement, plans should factor in the potential number of years in retirement or longevity, a concept that actuaries use.
By addressing longevity, Gallagher Fiduciary Advisors, LLC (GFA) provides clients with comprehensive strategies to enhance their financial wellbeing and offer a competitive advantage in retirement planning.
What's the difference between longevity and life expectancy, and what happens when the latter is ignored?
Savings capacity and culture

Life expectancy isn't an end date or a date to mark on your calendar. Few people die at 78.4, the most recent average estimated life expectancy in the US.*
The transition from wealth accumulation to then making sure that this can generate a sustainable retirement income is a critical one. But it is at this juncture where many retirement plans fail — because they do not adequately address the risks of longevity.
The challenge can become even more complex when considering that retirement income may need to last decades longer than traditional planning models have forecast. Employer-matched contributions alone won't provide sufficient income for many employees.
For one client, Gallagher demonstrated how the probability variations played out for different demographic groups, pay levels, ages and scenarios. The potential gaps were striking — many employees would fall short of their retirement income goals.
"It was a reality check that caused the organization to rethink not just their communication strategy but their overall approach to helping employees better understand the savings capacity and culture needed to help ensure long-term financial wellbeing," says Tonya Manning, US Defined Benefit practice leader and chief actuary, Gallagher.
The misunderstanding of a long life: life expectancy vs. longevity

While the two terms appear similar, their meanings are fundamentally different. which is critical to making informed retirement planning decisions.
Life expectancy is an estimate of how long you're likely to live. Longevity, on the other hand, refers to the actual age to which you could live. Longevity can be far greater than average life expectancy, and flawed planning could mean insufficient income to support the desired quality of life after retirement.
You can outlive life expectancy by five, 10, 15 or more years, but if you haven't planned accordingly, you could find yourself with a significant shortfall. To attain financial confidence in your retirement years, there needs to be a mindset shift — from how long averages predict we'll live, to how long we could live.
Gallagher's 2024 US Workforce Trends Report: Financial Wellbeing found that three out of five people lack a plan to secure their financial wellbeing. Manning said, "Individuals need help to understand when they need to cash out their pension benefit or take out an annuity. This all stems from the confusion surrounding longevity and life expectancy."
