In one sense, Amazon.com Inc. founder Jeff Bezos and his ex-wife, MacKenzie Bezos, are nothing special.
By finalizing their divorce this month, they join the millions of Americans now splitting up in middle age. The rate of divorce after age 50 has doubled in the U.S. since 1990.
The billionaire exes are unique, though, in escaping divorce with their finances relatively unscathed. He's still the world's richest person, worth $123.1 billion, and she has a $39.7 billion fortune, according to the Bloomberg Billionaires Index. Amazon shares climbed 19% since they announced the end of their 25-year marriage in January.
(More: Social Security and gray divorce)
There are few things more devastating than divorce. Even the very wealthy can find it financially draining, emotionally harrowing and just plain messy. Academic studies document serious health effects. A 2009 paper noted that recently separated or divorced adults have higher resting blood pressure. Last year, a German study found "divorce led to considerable weight gain over time, especially in men."
Splitting up after age 50 — often called "gray divorce" — may be particularly hazardous to your emotional and financial health, far worse than doing so at younger ages. A wave of new research is quantifying the damage.
"It's a grim picture," said Susan Brown, a Bowling Green State University sociology professor and co-director of the National Center for Family & Marriage Research, which has generated many of the new findings. According to one study, people who've gone through a gray divorce report higher levels of depression than those whose spouses died.
The economic effects are even more stark. As more and more Baby Boomers end marriages, sometimes for the second or third time, they're wrecking their finances on an unprecedented scale.
"Getting a gray divorce is a major financial shock," Ms. Brown said.
If you get divorced after age 50, expect your wealth to drop by about 50%, Ms. Brown and her colleagues found in yet-to-be-published research that analyzed a long-running longitudinal survey of 20,000 Americans born before 1960. That's not really a surprise: After all, any divorce involves dividing a family's resources.
But incomes also collapse after a gray divorce, particularly for women. The researchers looked at standard of living — income adjusted for household size — reflecting the fact that a solo adult needs less income than a single parent with two children still at home. They found that when women divorce after age 50, standard of living plunges 45%. That's about double the decline found in previous research on younger divorced women.
Older men see their standard of living drop 21% after a divorce. Previous studies have found a small or negligible effect of divorce on younger men's incomes.
Even more troubling is that older people aren't bouncing back from these financial shocks. Ms. Brown and her colleagues were able to follow survey respondents' finances for up to a decade post-divorce.
"There is no appreciable recovery on the wealth front," she said. "There's no appreciable recovery in standard of living."
Late in their careers, older Americans simply don't have time to undo the financial destruction that a divorce causes. Women who spent years at home caring for children find it difficult to re-enter the workforce.
By retirement age, they can be in dire straits. Another 2017 study by Brown and colleagues found U.S. women 63 and older who went through a gray divorce have a poverty rate of 27%, more than any other group at that age, including widows, and nine times the rate of couples who stay married.
Even the most successful people can get thrown off balance by divorce. A 2016 paper in the Journal of Financial Economics found that both splitting up and getting married hurt the performance of hedge fund managers.
"Marriage and divorce are deeply personal events that distract fund managers from their investment duties," the researchers wrote. Managers underperform by 4.3% a year in the six months around a breakup, and continue to lag behind by 2.3% annually for up to two years after the divorce.
Presumably divorces could also harm chief executive officers and the companies they run, but researchers get differing results depending on how they study the topic. New research, relying on detailed data on companies in Denmark, found divorce only hurts performance in a statistically significant way for small firms, with fewer than 10 employees. One explanation is that, at big companies, other employees can cover for a stressed and distracted CEO.
"The smaller the firm, the more important the CEO becomes," said Aarhus University professor Ingo Kleindienst, one of the researchers involved. "The larger the firm, the more professional it is and the more likely that other executives will compensate for his decline in cognitive sharpness."
Divorcing CEOs may even find ways to game the system. Research by George Mason University law professor Jordan Neyland suggests a CEO's divorce can influence their compensation. Data show large companies raise CEO salaries and other benefits by more than $2 million on average after a divorce. The reason for the higher pay may be to help the CEOs (overwhelmingly men) cover the costs of cash settlements with their spouses (overwhelmingly women) without selling shares. "It looks like the board takes some corrective measures after the divorce," he said.
The overall U.S. divorce rate is dropping even as the number of divorces after age 50 surges. The reason is a generational divide: Americans in their 20s, 30s and 40s are delaying and, in some cases, skipping marriage. Those who do get hitched are likelier to stay together. Meanwhile, baby boomers — who caused the divorce rate to surge starting in the 1970s — are continuing to divorce at higher rates as they age.
The boomers' propensity to break up, combined with the aging of the U.S. population, means the U.S. will see many more gray divorces in the years ahead. Even if the rate of gray divorce stays the same, more than 828,000 Americans will be divorcing each year by 2030, Ms. Brown and her colleague I-Fen Lin estimate. That's almost 30% more than in 2010, and four times more than the 206,000 older people who divorced in 1990.