12.1 Group Health Fundamentals and Eligibility

Group Health Fundamentals and Eligibility

Group health insurance covers a defined group of people under a single contract, almost always sponsored by an employer or an association. On the national licensing exam, the recurring theme is that the group is the underwriting unit, not the individual. The insurer issues one master policy (master contract) to the group sponsor; each covered participant receives a certificate of insurance, which is a summary of coverage and is not the contract itself.

The Master Policy Structure

The master policy is held by the employer (the policyholder). It contains all terms, benefits, exclusions, and conditions. When coverage changes, the master policy is amended, and revised certificates are distributed. A frequent exam trap: if a participant's certificate conflicts with the master policy, the master policy controls, because the certificate is merely descriptive.

Eligible Groups

A group must exist for a purpose other than obtaining insurance — this anti-selection rule prevents people from banding together solely to buy coverage. Recognized group types include:

• Single-employer groups — the most common; employees of one company.
• Multiple-employer trusts (METs / MEWAs) — small employers pooled together.
• Association / professional groups — members of a bona fide association (e.g., a bar association) that predates the insurance offering.
• Labor union (Taft-Hartley) groups — coverage negotiated through collective bargaining.
• Trustee groups — coverage held by a trust for multiple employers.

Eligibility Requirements for Participants

To control adverse selection, group plans impose eligibility filters. Memorize these four:

1. Actively-at-work provision — the employee must be performing normal job duties on the day coverage begins. Someone home sick on the effective date may have coverage deferred until they return.
2. Full-time status — typically defined as 30 or more hours per week under the ACA for employer-mandate purposes; many plans use this threshold.
3. Eligibility (probationary) period — a waiting period after hire, commonly 30, 60, or 90 days, before coverage starts. The ACA caps waiting periods at 90 days.
4. Enrollment period — after becoming eligible, the employee has an enrollment window (often 31 days) to elect coverage.

Enrollment Windows and Late Entrants

The initial enrollment period is the window when newly eligible employees sign up. Miss it, and the employee becomes a late entrant, who may face evidence of insurability, a longer waiting period, or limited benefits — another adverse-selection control.

Open enrollment is a recurring window (often annual, 2–4 weeks) during which late entrants and current participants may add or change coverage without evidence of insurability. Outside open enrollment, a qualifying life event (marriage, birth, loss of other coverage) opens a special enrollment period — generally 30 days under group rules, 60 days under HIPAA special-enrollment triggers.

Coverage Amount Formulas

Group benefits are set by formula, not individual choice, to block anti-selection. Common bases: a flat amount for all, a multiple of salary, or benefits tied to job class. Because the participant cannot self-select a high amount, the insurer accepts the group on guaranteed-issue terms up to a stated maximum.

Exam Tip: The certificate is never the contract. If a question pits certificate language against the master policy, the master policy wins.

Master Contracts, Certificates, and Eligibility Tests

Group health rests on a master contract issued to the sponsor (employer, union, association, trust); individual members receive a certificate of coverage, not a policy. To prevent the group from being formed only to buy insurance, the law requires it to exist for a purpose other than obtaining insurance and to enroll eligible members who satisfy a probationary (waiting) period and an actively-at-work requirement on the effective date.

Worked logic: a new hire with a 60-day probationary period who enrolls during the 31-day enrollment window that follows becomes a timely enrollee; one who waits is a late enrollee and may be restricted to open enrollment. Eligibility for dependents typically covers a spouse and children to age 26 under the ACA. Because the sponsor negotiates terms, experience and community rating set group premiums rather than individual medical underwriting.

Dependent Eligibility and Newborns

Group health plans commonly extend coverage to dependents — a spouse and children. Under the ACA, adult children must be eligible to age 26 regardless of student or marital status. Two automatic-coverage provisions are tested:

• Newborn coverage — a newborn is covered automatically from the moment of birth, usually for 31 days; the parent must notify the insurer and pay any added premium to keep coverage going.
• Adopted children / children placed for adoption — treated the same as newborns, covered from placement.

These provisions block an insurer from excluding a sick newborn, so an exam answer that denies coverage to an infant born with a condition is wrong.

Coordination of Benefits (COB)

When a person is covered by two group plans (e.g., their own and a spouse's), the coordination of benefits provision prevents the insured from collecting more than 100% of the actual expense. One plan is primary (pays first, as if no other coverage existed) and the other is secondary (pays the balance up to its own limits).

The order-of-benefits rules: a person's own employer plan is primary over a plan where they are a dependent. For a child covered by both parents, the birthday rule applies — the plan of the parent whose birthday falls earlier in the calendar year (month and day, not year of birth) is primary.

Worked COB Example

A covered child incurs a $1,000 bill. The primary plan pays $700. The secondary plan would have paid $800 on its own. The secondary plan pays the remaining $300 (up to the $1,000 total), so the family pays nothing and no plan overpays. Total reimbursement is capped at the $1,000 actual cost.