Three-legged stool model of retirement security

The Three-legged stool model of retirement security is a framework for understanding how Americans were expected to support themselves after leaving paid work: through Social Security, private pensions, and personal savings and investments. The book’s central contrast is between that imagined three-part support and a present in which pensions have receded, savings are vulnerable, and Social Security often cannot provide enough. The result is less a stable platform for retirement than a transfer of economic risk to households, many of whose members must keep working as they age.

The Three supports

After the New Deal, economists described retirement finance as a three-legged stool. Social Security provided a public foundation; employer-sponsored pensions promised regular income; and personal investments and savings offered another source of support. Together, the three were supposed to make old age financially sustainable rather than leave each worker to rely on a single benefit or individual fortune.

The model’s strength was its combination of supports. A shortfall in one leg need not, in principle, bring the whole arrangement down if the other two remained dependable. But the metaphor also exposes the danger of treating retirement as secure when each leg is subject to different pressures. A public benefit may be too small to cover basic needs, a pension may be lost or unavailable, and savings may be depleted by economic shocks or insufficient contributions.

How the stool weakened

The book describes two supports as having been substantially undermined. Many households saw assets destroyed in the Great Recession, while saving had already been declining. At the same time, employers increasingly replaced defined-benefit pensions—which were funded by employers and guaranteed a monthly payment—with 401(k) plans. Those accounts often depend on employee contributions and investment outcomes, and they can run out during a retiree’s lifetime. Although 401(k)s were promoted as giving workers freedom to choose investments, they were also much cheaper for companies than traditional pension plans.

This shift changed who bears the consequences when retirement resources fall short. The risk once pooled through employer or government-backed arrangements moved onto families’ own balance sheets. The book captures that change in the phrase You are on your own: people must manage their savings, withstand market losses, and make limited income last, even when their earnings or circumstances leave little room to prepare.

Social Security consequently became the largest single source of income for most Americans aged sixty-five and older, but its importance does not mean it is adequate. Economist Peter Brady contrasted the old three-legged stool with a pogo stick: a single support that can keep someone upright only precariously. Economist Teresa Ghilarducci warned that nearly half of middle-class workers might face a retirement food budget of as little as five dollars a day. For retirees who cannot meet expenses on benefits and savings, a paycheck is not optional leisure income; it is a condition of getting by. The book also notes that jobs available to older workers tend to pay less while demanding more physically, making continued work an uncertain substitute for retirement security.

Risk carried across a lifetime

The book links the weakening retirement system to older Americans’ work histories, not simply to decisions made near retirement age. David Roderick, a seventy-seven-year-old workamper, had cashed out a pension earned over sixteen years teaching at California community colleges during an earlier divorce. The $22,000 he received had to be divided with his first wife; with the state match, the pension might otherwise have grown to at least $500,000. His later wife had also suffered a major loss: an annuity worth $650,000 from her first marriage disappeared in the 1991 collapse of Executive Life. Their experience shows how life events and financial failures can erode retirement resources accumulated over decades.

The consequences appeared in the labor that older people continued to perform. In the winter of 2012, Roderick and his wife sold Christmas trees while living in their fifteen-year-old recreational vehicle. He carried trees as tall as nine feet and loaded them onto customers’ vehicles for eight to ten hours a day, six days a week. He valued selling but regarded the cutting and hauling as work better suited to younger people. The book sets that demanding job against the recurring appeal of older workers to employers as reliable and hardworking: valued labor can still be physically taxing and poorly matched to an aging body.

The trend extended beyond individual stories. In 2016, nearly nine million Americans aged sixty-five and older were employed, a 60 percent increase over a decade. Economists expected the number and the share of seniors in the labor force to continue rising. Although retirement remained associated with leisure, only 17 percent of older Americans surveyed expected not to work at all in later life. These figures make continued employment part of the model’s failure, not evidence that the promised security has been achieved.

Unequal consequences and the family fallback

The shortfall is especially consequential for women, whose lower lifetime earnings, unpaid caregiving, and longer average lives can leave fewer resources to stretch across old age. In 2015, more than one in six older women living alone was below the poverty line. Women received, on average, $341 less per month in Social Security benefits than men, a disparity the book connects to lower total payroll-tax contributions and a persistent wage gap. Caregiving also shaped the earnings behind retirement: Linda May had raised two children and later lived with and helped care for her mother, who developed aggressive brain cancer.

Linda’s own finances show what inadequate benefits can mean in daily life. She turned sixty-two in June 2012 and received her first Social Security check the following month. She later regretted starting benefits before age sixty-five, but judged that the increase from waiting would not have amounted to much. With low-wage work and rent consuming her pay, she worried about how she could live without working for the rest of her life or becoming a burden to her children. Her hoped-for Earthship—a self-sufficient home with systems for food, electricity, climate control, and water—represented an attempt to create security the conventional retirement arrangement had not supplied.

When Linda’s daughter Audra and son-in-law Collin faced eviction after Collin lost short-term disability benefits, Linda gave them her stored twenty-eight-foot motorhome. It offered shelter to the family, including three teenagers and four dogs, but the arrangement also revealed how housing and income crises are absorbed within families. Linda wanted independence from dependence on her children even as the household’s circumstances made mutual support necessary. The model’s missing supports thus do not leave an empty space: they redirect practical and financial burdens toward relatives, including older women already managing limited income.

The Three-legged stool model matters in the book as both a description of a former retirement ideal and a measure of its erosion. Its decline connects institutional changes—pension replacement, insecure savings, and benefits too modest to live on—to the visible realities of older people doing seasonal or physically demanding work, and families sharing vehicles, space, and care. The question is not only whether someone can stop working, but whether the supports intended to make that choice possible still hold.