12.1 Group Health Fundamentals and Eligibility
Key Takeaways
- The insurer issues one master contract to the group sponsor; each member receives a certificate of coverage, not the actual policy.
- A group must be a natural group formed for a purpose other than buying insurance to qualify.
- Eligible employees are typically full-time (30+ hours/week) who have satisfied the probationary period.
- Open enrollment and the eligibility period control when members can join without evidence of insurability.
- Group underwriting evaluates the whole group, not each individual, which reduces adverse selection.
Group health insurance covers many people under a single contract, usually sponsored by an employer, association, union, or trust. The exam tests how the contract is structured, who qualifies, and when members can enroll. Master the vocabulary first, because the state and national questions reuse it constantly.
The Master Contract Structure
The insurer issues one master contract (master policy) to the group sponsor, called the group policyholder. Individual members do not receive a policy. Instead, each receives a certificate of coverage (or certificate of insurance) that summarizes benefits, exclusions, and conversion rights.
| Element | Who holds it | What it does |
|---|---|---|
| Master contract | Group policyholder (employer) | The legally binding policy |
| Certificate | Each covered member | Summary of coverage, not the policy |
| Schedule of benefits | Attached to certificate | Lists deductibles, limits, copays |
Exam trap: The certificate is NOT the contract. If a dispute arises and the certificate conflicts with the master policy, the master policy controls.
Valid Group Requirement
To prevent abuse, an eligible group must be a natural group that exists for a reason other than obtaining insurance. Common qualifying groups include:
- Single-employer groups (most common)
- Multiple-employer trusts (METs) and MEWAs
- Labor union (Taft-Hartley) groups
- Trade and professional associations
- Creditor-debtor groups (e.g., a lender insuring borrowers)
A collection of strangers assembled solely to buy cheap coverage is not a valid group, because it would attract unhealthy applicants and produce adverse selection.
Eligibility Classes
Employers define eligibility by objective classes so coverage is not selectively granted. Classes must be based on conditions of employment, not health. Typical classes:
- All full-time employees working 30 or more hours per week
- Salaried versus hourly employees
- Employees in a defined geographic location or division
Part-time, seasonal, and temporary workers are usually excluded. Amounts of coverage are set by a nondiscriminatory formula (for example, 1x or 2x salary) so individuals cannot select against the plan.
Enrollment Periods
Timing controls whether a member can join without proving good health.
| Period | Definition | Effect |
|---|---|---|
| Probationary period | Waiting time after hire (e.g., 30-90 days) before eligibility begins | Member cannot enroll yet |
| Eligibility (enrollment) period | Window (often 31 days) after eligibility to enroll | Enroll with NO evidence of insurability |
| Open enrollment | Recurring window (often annual) to join or change plans | Guaranteed-issue, no medical underwriting |
| Late enrollee | Member who applies after the eligibility window | May require evidence of insurability |
A member who declines coverage during the initial eligibility period and later applies becomes a late enrollee, who can be required to submit evidence of insurability or wait until the next open enrollment.
Worked Example: Probationary + Eligibility
An employee is hired March 1 with a 60-day probationary period and a 31-day eligibility window. Probation ends April 30. The eligibility window runs May 1-31. If the employee enrolls during May, coverage is guaranteed-issue. If the employee waits until July, they are a late enrollee and may face individual underwriting.
Dependent Eligibility and Coverage Effective Dates
Group health plans normally extend coverage to a member's dependents: a legal spouse and children. Under the Affordable Care Act, plans that cover children must continue dependent children to age 26, regardless of marital, student, financial-dependency, or residency status. A newborn or newly adopted child is typically covered automatically for the first 31 days, and the member must add the child within that window to keep coverage in force.
When Coverage Begins and Ends
- Begins: the later of the eligibility date the member enrolls or the plan's stated effective date.
- Ends: when employment terminates, hours drop below the eligibility threshold, the member stops paying any required contribution, or the master contract is canceled.
Exam point: A child can be covered to age 26 even if married or not living with the parent. The only ACA conditions removed were the old student-status and financial-dependency tests.
Conversion and Why Groups Differ
When group coverage ends, many members have a conversion privilege: the right to convert to an individual policy without proving insurability, usually within 31 days of losing group coverage. The converted policy may cost more and offer narrower benefits, but it preserves access for someone who became uninsurable. Conversion is separate from COBRA continuation, which is covered later.
The reason groups work at all is the law of large numbers combined with controlled enrollment. By insuring many lives whose claims are reasonably predictable, the insurer can charge a level rate, and by forcing enrollment windows and formula-based amounts, it blocks the unhealthy from loading the pool. Every group rule in this unit ultimately traces back to limiting adverse selection while keeping coverage affordable and broadly available.
Eligible Groups and the Master Contract Structure
The exam tests which groups may be insured and how the contract is built. The most common is the single-employer group, but the law also recognizes multiple-employer trusts and welfare arrangements (METs/MEWAs), labor union (Taft-Hartley) trusts, trade and professional association groups, and creditor groups that cover debtors up to the loan balance. A defining rule is that the group must form for a purpose other than obtaining insurance, which blocks artificial pools assembled solely to buy coverage and thereby controls adverse selection.
Eligibility within a valid group is then defined by objective criteria such as full-time status and a probationary waiting period, never by individual health.
The contractual architecture mirrors group life. The insurer issues one master contract to the policyholder, typically the employer or trustee, and each covered member receives a certificate of coverage summarizing benefits rather than an individual policy. Enrollment is funneled through defined windows: an initial eligibility period for new hires, an open enrollment period, and special enrollment triggered by qualifying life events such as marriage, birth, or loss of other coverage.
Work an eligibility scenario: an employee who declines coverage at initial eligibility and later tries to enroll outside open enrollment without a qualifying event becomes a late entrant and may face evidence-of-insurability requirements or a benefit limitation, which is precisely the adverse-selection guard the windows exist to enforce. When coverage ends, the 31-day conversion privilege lets a member move to an individual policy without proving insurability, preserving access for someone who became uninsurable while in the group.
An employee declines group health coverage during the 31-day initial eligibility period and applies four months later. How is this employee classified?
In group health insurance, which document is given to each covered employee?