What it means
Group cover dominates because risk pooling works better across a workforce than across individuals who buy only when they expect to need care. Employers negotiate with insurers on behalf of everyone, spreading healthy and less healthy members across one pool, which produces lower premiums than the same people would obtain alone.
It is also why leaving a job triggers a decision about continuation cover. The cost is shared in more than one way, and confusing the layers leads to poor decisions.
The premium is what is paid every month for the cover to exist, the deductible is the amount the member pays before the insurer contributes, coinsurance is the percentage the member pays after that, and the out-of-pocket maximum caps total member spending for the year. A plan with a low premium usually has a high deductible, so the cheapest plan on paper is not the cheapest for someone who uses care regularly.
Employers choose between two funding models. A fully insured plan means the employer pays a fixed premium and the insurer carries the claims risk, while a self-funded plan means the employer pays claims directly and buys stop-loss insurance to cap the damage from a catastrophic year.
Self-funding is common above a few hundred employees because it converts a fixed cost into a variable one and returns favourable claims experience to the employer instead of the insurer. Network design is the other lever.
A health maintenance style plan restricts members to a defined network and usually requires a referral, while a preferred provider style plan allows out-of-network care at a higher member cost. Narrower networks cost less because the insurer negotiates harder with a smaller group of providers.
For the finance function this is a large and volatile payroll cost that needs planning rather than reacting. Renewal increases in the high single digits or low double digits are common, and the levers available are plan design, network choice, contribution split and wellness or claims management initiatives.
Deciding which lever to pull is easier when the business understands how its own claims experience compares with the rate it is being quoted.
In practice
Real-world examples.
Example
A 40-person design agency is quoted a 12% renewal increase. It responds by raising the deductible from $1,500 to $2,500 and increasing its own contribution slightly, holding the net premium increase to 4% while keeping the same provider network.
Example
A manufacturer with 600 employees moves from a fully insured plan to self-funding with stop-loss cover attaching at $150,000 per member. In a year with no catastrophic claims it retains the saving rather than the insurer, though it now budgets for monthly claims that vary rather than a level premium.
Example
A self-employed consultant buys individual cover through a public marketplace rather than joining a spouse's employer plan. She chooses a higher deductible because she rarely uses care, and treats the premium as a deductible business expense within the rules that apply to her.
Formula
Calculation
Employee annual cost = (Employee monthly premium share x 12) + Deductible + Coinsurance share, capped at the out-of-pocket maximum
An employer offers a plan costing $600 per employee per month and pays 80% of the premium. The plan has a $2,000 deductible, 20% coinsurance and a $6,000 out-of-pocket maximum.
Employer premium share = $600 x 80% = $480 a month, or $5,760 a year
Employee premium share = $600 x 20% = $120 a month, or $1,440 a year
Total annual premium per employee = $7,200
An employee then incurs $12,000 of covered medical costs in the year.
Deductible paid by employee = $2,000
Remaining cost = $12,000 - $2,000 = $10,000
Coinsurance at 20% = $10,000 x 20% = $2,000
Total member cost sharing = $2,000 + $2,000 = $4,000, which is below the $6,000 maximum
Insurer pays = $12,000 - $4,000 = $8,000
Employee total outlay for the year = $1,440 + $4,000 = $5,440Case study
Seen in the real world.
Kestrel Analytics is a fictional data consultancy created for this illustrative example. With 85 employees it received a renewal quote 18% above the expiring premium and assumed the only choice was to pass the increase on to staff.
Its broker produced a claims analysis showing that a single high-cost year had driven the increase, and that ongoing claims had returned to normal levels. Kestrel negotiated a two-year rate agreement, added a narrower network option alongside the existing plan, and kept its 80% contribution split. Roughly a third of employees chose the narrower network voluntarily because it carried a lower payroll deduction, which reduced the blended cost by more than the plan change alone would have achieved.
The illustrative point is that a renewal quote is a starting position built on data the employer can examine. Understanding what drove the increase gave Kestrel options beyond simply cutting benefits or absorbing the cost.
Watch out
Common mistakes.
- Choosing the plan with the lowest premium without modelling likely usage. A high deductible plan can cost far more overall for an employee who uses care regularly, and the difference often exceeds the premium saving.
- Confusing the deductible with the out-of-pocket maximum. The deductible is what is paid before the insurer starts contributing, while the maximum is the ceiling on total member spending for the year including coinsurance.
- Treating a self-funded plan as free of risk because most years are quiet. Without adequate stop-loss cover a single catastrophic claim can swamp a year's budgeted savings, so the attachment point deserves as much attention as the projected cost.
Questions
People also ask.
What is the difference between commercial and government health cover?
Commercial cover is underwritten and sold by private insurers, usually through employers, whereas government schemes are funded and administered by the state for defined eligible populations.
Why do employers pay most of the premium?
Contributions are generally a deductible business cost and are often exempt from payroll taxes, so the arrangement is tax efficient, and competitive pressure in hiring makes a meaningful employer share close to standard.
What happens to cover when someone leaves the job?
Group cover normally ends within days or at month end, and continuation options let a former employee stay on the plan for a limited period while paying the full cost themselves.
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