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As millions of baby boomers continue their mass exodus from the workforce to retirement, they are already coming to grips with the reality that investment returns in the coming years are unlikely to keep pace with those of recent history, as illustrated by the modified projections recently used by Calpers and other major institutional investors. Now comes a new study that adds insult to injury: the principal driving force for these depressed returns is none other than the baby boomer generation itself.

The Center for Retirement Research at Boston College published the results of a recent study, “How Will More Retirees Affect Investment Returns?” The research led them to conclude, “A population with more retirees relative to workers will reduce the demand for savings and expand the supply, putting some downward pressure on investment returns.”

(Related: Helping Your Clients Afford a More Expensive Retirement)

In other words, your retiring clients will not only need to plan on lower returns in the future, they are now faced with data suggesting it’s being caused by a law of economics set in motion by their own generation.

As CNBC noted in its coverage of the study, there are a couple different explanations behind this projection. One thread is that retirees tend to be frugal, perhaps out of fear they will deplete their accounts, and the greater supply of cash sitting in savings will reduce investment returns. Another thread is that the labor force will begin to stagnate as boomers exit the workforce – indeed, there are signs that has already begun – and that stagnation “will restrain economic activity and the need for money to fund roads, shopping centers and factories . . . which will further reduce returns,” according to CNBC.

Indeed, experts such as Jack Bogle predict that stock returns in particular, which have typically averaged in the 7% range annually, will decline in future years to an average return of closer to 4% annually.

In light of these projections, the Center for Retirement Research study offered this simple conclusion: “To the extent that the demographic transition reduces investment returns, workers would need to save more than they currently do to maintain their standard of living in retirement,” writes Steven Sass, a research economist at the Center.

Sass notes that retirees have some readily available strategies for coping with this gap between historical investment returns and future projected returns. First, Americans can save more during the working years, but of course that isn’t always an option for your clients who have entered the retirement phase.

Another strategy is to work longer before retiring, an option that is becoming more bearable (and realistic) due to advancements in health care and more flexible workforce environments. A third approach is to “cope effectively with lackluster market returns by tapping home equity, downsizing and wisely using long-term care insurance and annuities,” Sass told CNBC.

This strategy of taking a fresh look at all available assets in your clients’ portfolios is often a search that will lead you to discover assets with hidden value, just waiting to be unlocked. In addition to home equity, as noted by Sass, many of your Baby Boomer clients are likely to own one or more life insurance policies that may be liquidated. Many life insurance agents and financial advisors are unaware that a life insurance policy that can be sold by the client if the asset is no longer serving its purpose, generating immediate cash flow to offset the shortfall in investment returns.

Part of your job as a trusted financial advisor to your clients is to help them anticipate the road ahead, even if the picture is less rosy than they might hope. This new data indicates that the surging number of retirees from the Baby Boomer generation is likely to be its own economic force that depresses investment returns for those very individuals. But forewarned is forearmed and more options is always better than fewer.

—-Read How to Calm a Panicked Client? Look at Stable Assets on ThinkAdvisor.