When the open enrollment packet lands this fall, most workers flip straight to the premium line. A new read on employer health plans for 2027, from the benefits consultancy Mercer, found that roughly two-thirds of employers with 500 or more workers expect to raise the share of that premium employees pay next year. The shift will not look identical on every paycheck stub — some employers are leaning on deductibles and plan design instead of the premium line itself — but the direction is consistent: more of next year’s cost growth is being routed toward the employee side of the ledger.
What the Two-Thirds Figure Actually Measures
The two-thirds figure traces back to Mercer’s Survey on Health and Benefit Strategies for 2027, fielded last spring among more than 600 U.S. employers, roughly 480 of them with 500 or more workers. Mercer’s own summary of the results, published in late August alongside the firm’s annual cost-trend outlook, states that about two-thirds of those large employers plan to increase the employee share of premium costs for the 2027 plan year, and adds that for many affected workers, the payroll deduction for coverage will climb faster than the average cost increase employers themselves are absorbing.
That distinction matters at the kitchen table. A premium increase raises a fixed cost every pay period, whether or not anyone in the household sees a doctor that year. A deductible increase, by contrast, only bites when care actually gets used. Mercer tracks the two separately, and the firm’s August 2026 write-up is where the two-thirds premium-share figure sits alongside the plan-design numbers described below, precisely because employers are pulling both levers at once rather than choosing one.
The underlying study behind that figure covered 604 organizations, split between 481 with 500 or more workers and 123 smaller employers, and Mercer’s public reporting has centered on the large-employer segment because it covers the bulk of people with job-based coverage in the United States. That size cutoff is not incidental: larger employers are more likely to self-fund their health plans, which gives them more direct control over exactly how much of a premium increase to pass along to employees versus absorbing internally. Government wage data show why that segment is worth watching: among private-sector workers at employers with 500 or more workers, employees enrolled in individual coverage already pay an average of 19% of the premium themselves, according to the Bureau of Labor Statistics’ National Compensation Survey data on employer and employee premium shares — the baseline the Mercer projections would push higher for 2027.
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Why 59% of Employers Are Reaching for the Deductible Instead
Premium contribution is not the only dial employers are turning. The same Mercer research found that 59% of employers plan cost-cutting changes to health benefits for 2027, including plan-design shifts such as higher deductibles that raise a member’s out-of-pocket exposure without touching the per-paycheck premium line at all. A separate, earlier reading from Mercer’s Survey on Health and Benefit Strategies for 2027 found nearly half of large employers, 48%, expect to raise deductibles or copays specifically, in ways that will produce higher out-of-pocket costs for employees in the coming plan year.
For a household budgeting around a set monthly income, that combination is worth separating into two questions when the enrollment forms arrive: has the amount taken out of each paycheck for coverage gone up, and has the amount owed before the plan starts paying for care gone up. Both can rise in the same year, on the same plan, for the same employer, and the enrollment portal typically displays both figures side by side once a worker selects a plan option.
Variable Copay Plans: A Cheaper Lane Tied to Which Provider a Member Picks
Not every employer is simply raising costs across the board. Mercer’s research also tracked a newer plan design called a variable copay plan, in which members generally face no deductible or a low one, and pay less out of pocket when they use a provider the plan has identified as delivering strong outcomes at a reasonable price. According to the August 2026 findings, 12% of large employers plan to offer a variable copay plan in 2027, rising to 18% among employers with 20,000 or more workers.
The tradeoff built into these plans is straightforward: cost-sharing drops for members willing to use the recommended network, and stays higher, or reappears as a standard deductible, for members who go outside it. Mercer’s researchers also found that guiding members toward higher-quality providers has become a bigger institutional priority — 58% of large employers now rank it among their top three strategies for managing health programs, up from fifth place in last year’s survey. That ranking shift suggests more employers will roll out plan options built around provider steering rather than flat cost increases in the years just ahead, even as the near-term premium and deductible changes described above take effect for 2027.
What to Check on the Enrollment Form This Fall
Two figures on a 2027 benefits election form are worth comparing directly against the current year’s paperwork: the per-paycheck premium deduction for whichever plan tier applies (individual, employee-plus-one, or family), and the plan’s annual deductible and out-of-pocket maximum. A plan that looks unchanged on the surface can still cost more if either number moved. Where an employer offers more than one medical plan option, including a variable copay or high-performance network plan, comparing the full set of numbers, not just the premium, is the only way to see which option actually costs less over a typical year of care. Federal rules set the outer bounds on that deductible and out-of-pocket figure for any plan paired with a health savings account: for 2027, a qualifying high-deductible health plan must carry a deductible of at least $1,750 for individual coverage or $3,500 for family coverage, and its own out-of-pocket maximum is capped at $8,700 and $17,400, respectively, under the IRS’s 2027 inflation-adjusted limits for HSA-qualified plans.
The family-tier line is worth a second look specifically, since large employers typically calculate the employee share as a percentage of the total premium rather than a flat add-on, and family coverage carries a larger total premium than employee-only coverage. A percentage-based increase therefore produces a bigger dollar jump on a family plan than on an individual one, even when the employer’s stated contribution percentage looks identical across tiers on the summary page. That gap already shows up in government data: nationally, employees on family coverage at private-sector employers with 500 or more workers pay an average of 25% of the premium themselves, versus 19% for individual coverage, per the Bureau of Labor Statistics’ family-coverage premium-share table.
None of this is speculative for 2027 in the way a proposed bill or a pending rule might be. It reflects what employers told Mercer’s researchers they intend to do heading into next year’s plan-year decisions, based on survey responses collected this spring and summarized again at the end of August. The final version of Mercer’s broader annual survey, drawing on more than 2,000 employers, is expected to be released later this year and will show whether the two-thirds figure holds once the full sample is in.
What a Medicare Cost Appeal Requires in Writing
The premium and deductible shifts described above are an employer-plan story, but the same cost-sharing math follows a worker into Medicare once employer coverage ends. Medicare runs its own separate premium surcharge tied to income, its own annual drug-cost cap, and its own appeal process when a plan denies coverage, and each of those has a specific form and deadline behind it rather than a single number to remember.
The Medicare Cost & Coverage Protection Kit brings together 51 state Medicare cost-help packs alongside a plain explanation of the new Part D out-of-pocket cap.
Look up the medication and cost tracker in The Medicare Cost & Coverage Protection Kit.
AI-assisted research and drafting; reviewed by an editor.
