Five things employees say that signal a mix-up.
Each one ends in a surprise bill or a missed deadline when nobody explains it.
"I paid my premium, so this visit is covered." The premium keeps the plan active. Using care brings in cost sharing.
"The EOB came, so I owe that." An EOB explains the claim. The bill comes from the provider.
"The clinic takes my insurance, so it's in network." Not always. Check the plan's own directory.
"It was preauthorized, so it's paid." Approval is a review, not a payment promise.
"The HSA plan is the cheaper one." Never promise that an HSA plan will save anyone money. It depends on their care.
Definitions you can repeat word for word.
Paying for the plan vs. paying for care
- Premium: the monthly price of keeping coverage active, used or not.
- Allowed amount: what the plan recognizes for a covered service, usually a negotiated in-network rate.
- Deductible: what the member pays toward services subject to it before the plan starts sharing costs.
- Copay: a set dollar amount per covered service. Other services in that visit may bill separately.
- Coinsurance: the member's percentage of the allowed amount, when the plan's rules apply it.
- Out-of-pocket limit: a ceiling on certain covered cost sharing. Premiums and noncovered care don't count.
Getting care
- Network: the providers under contract with the plan.
- PPO, HMO, EPO: plan designs with different access and referral rules. Read the plan, not the initials.
- Referral: permission or direction to see another provider, when the plan requires it.
- Prior authorization: a plan review before certain services. Approval doesn't promise payment.
- Formulary: the plan's covered-drug list, sorted into tiers, some with extra coverage rules.
- Step therapy: a requirement to try one treatment before the plan covers another. Exceptions can apply.
Paperwork and accounts
- EOB (Explanation of Benefits): how the plan processed a claim. Not a bill.
- SBC (Summary of Benefits and Coverage): the standard-format summary for comparing plans.
- SPD (Summary Plan Description): how an ERISA plan works and participants' rights. Governing documents and the law control disputes.
- HSA (health savings account): owned by the employee. Whether they can contribute this year is a separate test.
- Health FSA: an employer-sponsored account usually funded by salary reductions, with spending and claim deadlines. The 2026 salary-reduction limit is $3,400, and up to $680 can carry over if the plan allows.
- HRA (Health Reimbursement Arrangement): employer-funded reimbursement under the arrangement's own terms.
Enrolling, waiting and leaving
- Open enrollment: the scheduled window for elections under the plan's rules.
- Special enrollment: a midyear chance to enroll after certain events, such as marriage, birth or loss of other coverage, if requested by the deadline.
- Waiting period: how long an eligible new hire waits before coverage begins, generally 90 days at most for group health plans.
- COBRA: lets qualified beneficiaries keep certain employer coverage for a limited time after a qualifying event, subject to eligibility rules and deadlines.
Beyond medical
- Disability coverage: replaces a share of covered income once the policy's conditions are met.
- Voluntary benefits: optional coverage, employee-paid through payroll deduction. Check what it supplements.
- EAP (Employee Assistance Program): what's offered, and how much, depends on your company's arrangement.
A note you can adapt.
Sample note to employees: "A few plan words trip almost everyone up. Your premium keeps coverage active. Your deductible, copays and coinsurance are your share when you use covered care. An Explanation of Benefits, or EOB, explains a claim and isn't a bill. Before you book, check that the provider is in our plan's network. Questions? Ask [name] or call the number on your ID card."
Keep these on hand, and know when to call us.
Have ready
Each plan's SBC, the SPD, the carrier's app or member site, the formulary link and our EOB walkthrough.
Escalate to us
A carrier answer that conflicts with the SBC, a close special enrollment or COBRA deadline, or a disputed eligibility question. Client teams can send those straight to us.
What HR teams ask about plan language.
Should we write our own glossary for the handbook?
Link to this page or the rest of Benefits 101 instead, and add only terms your plan uses its own way. A copied glossary goes stale when the plan changes.
Which document should an employee read first?
To compare options, the SBC. To understand a claim, the EOB beside the provider's bill. For rights and plan rules, the SPD.
How do we explain coinsurance without losing people?
Use round numbers. Illustrative: on a $100 allowed amount with 20% coinsurance, the member pays $20 and the plan pays $80, once any applicable deductible is met. Then show the plan's real percentages in the SBC.
Official definitions.
HealthCare.gov glossary. IRS Publication 969. U.S. Department of Labor on COBRA. DOL on the 90-day waiting period limit. General information, not legal or tax advice.
Put these terms in front of your team.
We run group, one-on-one and live virtual sessions built around your actual plan, at no extra fee for client teams.