Family health insurance premiums rose an average of 3% this year for people getting coverage through their jobs, the sixth consecutive year of small increases, according to a study released Tuesday.
The average total cost of family premiums was $18,764 for 2017, according to a survey of employers by the Kaiser Family Foundation and the Health Research & Educational Trust. That cost is generally divided between employers and workers. (Kaiser Health News is an editorially independent program of the foundation.)
While overall premium increases remain modest, workers are picking up a greater portion of the tab — this year $5,714 for family coverage, about a third of the total cost.
Premiums for employer-provided coverage for a single person rose 4% on average, to $6,690. Those individuals pay $1,213 as their share, on average.
Still, employer premiums are rising at a much slower rate than those in the Affordable Care Act's insurance marketplaces for people who buy their own coverage. For example, premiums for plans bought through Covered California, the state exchange, rose an average of 13% this year and are projected to rise 12.5% next year.
For all the media attention and political wrangling over the Obamacare exchanges, their share of the market is relatively small. They provide coverage to 10 million Americans while 151 million Americans get health insurance through their employer.
The continued slow rise of employer health premiums identified in the Kaiser survey surprised some analysts who have expected the trend to end as the economy picked up steam, leading to a jump in use of health services and health costs.
Drew Altman, chief executive of the Kaiser Family Foundation, said it's "healthcare's greatest mystery" why health insurance costs have continued their slow increase even as the economy has picked up the past few years. "We can't explain it."
Another unexpected result was that workers' deductibles — the health bills that workers must pay before their insurance coverage kicks in — remained stable this year at $1,221. Since 2010, as companies sought to keep premiums in check, deductibles have nearly doubled. Higher deductibles can limit premium increases because costs are shifted to workers and it gives them greater incentive to cut spending.
"Increasing deductibles has been a main strategy of employers to keep premiums down and we will have to watch if this plateauing is a one-time thing … or if this portends a sharper increase in premiums in future years," said Altman. "It could be deductibles are reaching their natural limit or could be the tighter labor market" that's causing employers to back off, he added.
Meanwhile, a second employer survey released Monday by Mercer, a benefits consulting firm, suggests a modest increase in health costs coming next year, too. Employers said they expect their health costs to increase by an average of 4.3% in 2018, according to the survey.
To deal with higher medical costs — notably big increases in the prices of prescription drugs — employers are using multiple strategies, including continuing to shift more costs to workers and paying doctors and hospitals based on the value of the services rather than just quantity of services.
Jeff Levin-Scherz, a health policy expert with benefits consultant Willis Towers Watson, said there is a limit on how much employers can shift costs to their workers, particularly in a tight labor market. "Single-digit increases doesn't mean healthcare costs are no longer a concern for employers," he said.
The 19th annual Kaiser survey also found that the proportion of employers offering health coverage remained stable last year at 53%. But the numbers have fallen over the past two decades.
The survey highlights that the amount workers pay can vary dramatically by employer size. Workers in small firms — those with fewer than 200 employees — pay on average $1,550 more annually for family premiums than those at large firms. The gap occurs because small firms are much more likely than large ones to contribute the same dollar amount toward a worker's health benefits whether they're enrolled in individual or family coverage.
More than one-third of workers at small employers pay at least half the total premium, compared with 8% at large employers.
Phil Galewitz is a senior correspondent for Kaiser Health News.