The Shift from Pensions to 401(k)s
Hi Everyone. In this post, we'll trace how retirement savings policy evolved from employer-guaranteed pensions to individual investment accounts, and what that shift means for today's seniors.
The Era of Defined-Benefit Pensions
The Defined-Benefit pension was once commonplace in America, especially amongst workers in the manufacturing sector, government, and union jobs. Also known simply as pensions, defined-benefit plans provide retirees with a steady monthly payment for the rest of their life. The monthly payment is determined by a formula that accounts for things like pay history and years of service and does not change based on investment returns. Employers have sole responsibility for investing the funds and making sure there is enough capital to meet future obligations to retirees. Investments are thus entirely the responsibility of employers. Alternatively stated: Defined-benefit pensions shifted the risk of investing away from workers and into the hands of employers.Employees are essentially given a guaranteed monthly paycheck in retirement. They receive a payout no matter how the market fares. Note that these plans are sometimes referred to as traditional pensions.
The Defined-Contribution Plan
Starting in the late 1970s and continuing into the 1980s, employers began replacing DB plans with defined-contribution plans. The most common type of defined-contribution plan is known as a 401(k), which comes from the section of the tax code that introduced the concept. Like a DB plan, an employer can contribute to an employee’s 401(k) and many choose to partially match employee contributions. The funds are deposited into an account that employees invest into as they see fit. This plan does not promise a set payout on retirement like a pension. Instead, the onus is on employees to invest their money wisely. Employees are essentially left to create their own pension
The Employment Retirement Income Security Act of 1974 (ERISA)
The rules governing pension plans didn’t really exist until ERISA was passed. This law set minimum standards for financial reporting, fiduciary responsibilities, and other rules on how pensions should be managed. The 401(k) plan was actually created by an unrelated tax bill a few years after ERISA that Republicans hoped would jump-start the economy. However, it turned out to be extremely popular with employers who saw it as a cheaper alternative to pensions.
Why Employers Made the Switch
It made financial sense for employers to switch to defined-contribution plans.The key is that pensions leave employers on the hook if investment returns don’t perform as expected. If retirees live longer than projected, employers have to make up the difference. Therefore, a defined-benefit plan is a riskier investment for employers because their liability is unknown. With defined-contribution plans, an employer’s responsibility is limited to their contribution or match. By switching to 401(k) plans, employers were able to pass that investment risk onto employees who traditionally lacked the expertise to manage their own pension funds.
Consequences
What does this mean for retirees today? Without a pension, retirees have no guaranteed income. They are completely reliant on the retirement fund they save up over their career. How much you contribute to your 401(k), what you decide to invest it in, when you retire, and a number of other factors play a huge role in how comfortable you live during retirement. For example, if you and your neighbor both work at the same company for the same amount of time and make the same salary but you contribute more to your 401(k) or invest more wisely you’ll be able to retire richer. Not only do retirees not have a guaranteed payout, they must also determine the best way to spend their nest egg. Spend too much too quickly and you could run out of money. Play it too safe and you might not live life to the fullest. While in theory workers are free to invest however they want, many are completely dependent on the guidance of their employer’s HR department.
Policy Issues and Continuing Debate
To fill these holes, there has been some movement toward policies such as automatic enrollment into employer based retirement plans, state-sponsored retirement savings vehicles for workers that lack access to employer based plans, and "low hassle" annuities that allow individuals to use funds from their 401(ks) to create more pension-like guaranteed incomes. All of these policies seek to provide some of the guarantees that were lost when defined- benefit pensions were replaced with defined- contribution plans, without sacrificing the portability that defined-contribution plans offer in today's mobile society.
References
Employee Benefit Research Institute, "Workplace Retirement Plans: By the Numbers." https://www.ebri.org/publications/by-the-numbers
TheStreet, "EBRI Traced 89% of Retirement Savings Loss to One Gap," May 21, 2026. https://www.thestreet.com/retirement/ebri-traced-89-of-retirement-savings-loss-to-one-gap
Economic Policy Institute, "The State of American Retirement Savings," December 10, 2019. https://www.epi.org/publication/the-state-of-american-retirement-savings/
James Poterba, Steven Venti, and David A. Wise, "The Shift from Defined Benefit Pensions to 401(k) Plans and the Pension Assets of the Baby Boom Cohort," Proceedings of the National Academy of Sciences, 104(33), August 8, 2007. https://pmc.ncbi.nlm.nih.gov/articles/PMC1948948
