12.1 Group Health Fundamentals and Eligibility

Group Health Fundamentals and Eligibility

Group health insurance covers a defined group of people under a single master contract issued to the sponsor (usually an employer, but also a union, trust, or association). Individual members do not own a policy. Instead, each covered employee receives a certificate of coverage describing the benefits and how to file a claim. The certificate is evidence of coverage, but the master policy held by the group sponsor controls the contractual terms.

Exam questions frequently test that distinction: the insured in a group contract is the sponsor (the policyowner), while employees are the certificate holders. Premiums flow from the sponsor to the insurer, and the sponsor administers enrollment, usually through payroll deduction. Because underwriting is done on the group as a whole rather than on each person, group coverage is generally cheaper and broader than individual coverage. The insurer evaluates the characteristics of the group — its size, age and gender mix, industry, and the reason it formed — rather than each member's medical history.

Coordination With Individual Coverage

Group coverage is generally broader and cheaper than individual coverage because the group is underwritten as a whole, but it ends when employment ends — which is why COBRA, state continuation, and the conversion privilege exist (covered in 12.3). The exam wants you to know that the master contract governs and the certificate merely summarizes; if the two conflict, the master policy controls.

Actively-at-Work and Late Enrollee Recap

Two eligibility rules dominate exam questions. The actively-at-work provision defers an employee's effective date if they are absent (for example, out sick) on the day coverage would begin, protecting the insurer from immediate known claims. A late enrollee — one who declined at first eligibility and applies after the initial enrollment window — may be required to provide evidence of insurability or wait until the next open enrollment. Distinguish the probationary period (the wait before an employee becomes eligible) from the enrollment period (the window to sign up once eligible).

Worked Scenario: Waiting Period and Special Enrollment

A new hire starts work on March 1 with a 90-day maximum waiting period, so group coverage begins by about May 30. If the employee marries in July, a special enrollment period (commonly 30 days for group plans) opens to add the spouse without waiting for the next open enrollment. The exam contrasts the probationary/waiting period (capped at 90 days under the ACA before coverage starts) with the enrollment window (the limited time to apply once eligible) and the special enrollment period triggered by a qualifying life event such as marriage, birth, adoption, or loss of other coverage.

Why the Group Must Exist for a Reason Other Than Insurance

A cornerstone rule of group underwriting is that the group must be formed for a purpose other than obtaining insurance. An employer-employee group exists to run a business; a union exists to represent workers. This requirement prevents adverse selection — if people could band together solely to buy cheap coverage, only the sick would join.

Related principles the exam tests include a steady flow of members (new healthy hires continually enter, refreshing the risk pool); a stable, identifiable group the sponsor can administer; and an employer that pays a share of premium, which discourages adverse selection and drives participation rules.

Eligible Groups

Eligibility Rules and the Probationary Period

To be eligible, an employee normally must be full-time and actively at work. The actively-at-work provision means coverage begins only when the employee is performing normal duties on the effective date — an employee out sick that day may have coverage deferred until they return. This protects the insurer from immediate claims on a known impairment.

New hires usually serve a probationary (waiting) period — commonly 30, 60, or 90 days — before coverage begins. Under the ACA, the maximum permissible waiting period for group health plans is 90 days. After the probationary period, the employee enters an enrollment period (typically 31 days) during which they may enroll without evidence of insurability. Miss that window, and the employee becomes a late enrollee who may have to provide evidence of insurability or wait for open enrollment.

Dependents and Open Enrollment

Group medical plans must offer dependent coverage to a spouse and children. Under the ACA, adult children may stay on a parent's plan until age 26, regardless of marital, student, residency, or financial status. Each year the plan holds an open enrollment period when members may add dependents, switch plan options, or enroll late without medical underwriting.

Outside open enrollment, a special enrollment period opens after a qualifying life event — marriage, birth or adoption, or loss of other coverage. A member generally has 30 days to make changes after such an event. These windows, like the actively-at-work rule, exist to keep enrollment predictable and to block people from waiting until they are sick to sign up. Watch for exam traps that confuse the probationary period (waiting for coverage to begin) with the enrollment period (the window to apply once eligible).