12.1 Group Health Fundamentals and Eligibility
Key Takeaways
- A single master contract is issued to the group sponsor; each member receives a certificate of coverage, not the policy itself.
- An eligible group must exist for a purpose other than buying insurance, which controls adverse selection.
- Noncontributory plans (employer pays 100%) require 100% participation; contributory plans typically require 75%.
- The eligibility period (often 31 days) lets new hires enroll without evidence of insurability; missing it creates late-enrollee status.
- ACA caps the waiting period at 90 days and defines full-time as 30+ hours per week.
Group Health Fundamentals and Eligibility
Group health insurance covers a number of individuals under a single master contract issued to a sponsor (the policyowner) rather than to each insured person. The most common sponsor is an employer, but unions, trade associations, multiple-employer trusts, and creditor groups also qualify. Each covered employee receives a certificate of coverage (also called a certificate of insurance) that summarizes benefits and proves participation; the employee does not hold the actual policy.
The defining legal feature is the relationship between the parties. The insurer contracts with the group sponsor, and the sponsor enrolls eligible members. Because the sponsor — not the individual — owns the contract, group plans are generally cheaper, use simplified underwriting, and are not contingent on each member's individual insurability.
Three parties appear on every group case, and the exam expects you to keep them straight. The insurer issues the master policy and pays claims. The sponsor/policyowner (the employer) holds the master contract, remits premium, and administers enrollment. The certificate holder (employee) is the insured but is not the policyowner. Dependents — a spouse and children — may be added as covered persons, but they enroll through the employee, not directly with the insurer. This three-party design is exactly why a single departing employee cannot cancel or alter the master policy.
Why Groups Must Be "Real"
To prevent adverse selection, insurers and regulators require that a group exist for a purpose other than obtaining insurance. An employer, a labor union, or a professional association all pass this test because they formed for employment, labor, or trade reasons. A collection of strangers assembled only to buy cheap coverage does not qualify.
Key eligibility concepts the exam tests:
- Eligible group: must be formed for a reason other than to obtain insurance.
- Full-time employee: typically defined as working 30+ hours per week (ACA standard) or a plan-defined threshold; part-time, seasonal, and temporary workers are usually excluded.
- Eligibility period (enrollment period): the window — commonly 31 days — during which a new hire may enroll without evidence of insurability.
- Probationary (waiting) period: a set time after hire (e.g., 30, 60, or 90 days; ACA caps the waiting period at 90 days) before coverage begins.
Eligibility Timeline Table
| Stage | Typical Length | What Happens |
|---|---|---|
| Probationary/waiting period | 0–90 days (ACA max 90) | New employee works; not yet eligible |
| Eligibility period | 31 days | Employee may enroll without proof of insurability |
| Late enrollee status | After eligibility period closes | Must show evidence of insurability or wait for open enrollment |
| Open enrollment | Annual, plan-defined | Late enrollees and changes accepted |
Trap to avoid: If an employee declines coverage during the eligibility period and later wants in, the insurer may require evidence of insurability because the employee is now a late enrollee. The eligibility period protects employees from individual underwriting only if they enroll on time.
Conversion and Continuation of Eligibility
Group contracts contain a conversion privilege: when an insured loses group eligibility — for example, employment ends — the person may convert to an individual policy without evidence of insurability, provided they apply and pay the first premium within a stated window (often 31 days). The converted policy is individual coverage at individual rates; it is not the group plan continued, and the benefits may differ.
Dependent eligibility is also tested. A newborn is automatically covered from the moment of birth, and the plan must be notified (commonly within 31 days) to keep coverage in force and adjust premium. Adopted children and children placed for adoption receive the same automatic protection. A dependent child generally remains eligible until age 26 under the ACA, after which continuation or conversion rights may apply. Understanding when eligibility ends is as important as knowing when it begins, because the end of eligibility is what triggers conversion and federal continuation rights.
Noncontributory vs. Contributory Plans
The participation rule depends on who pays the premium:
- Noncontributory plan: the employer pays 100% of the premium. Because no employee pays anything, the insurer requires 100% of eligible employees to be covered. This eliminates adverse selection.
- Contributory plan: employees pay part of the premium. Insurers commonly require at least 75% participation of eligible employees so the risk pool stays broad.
These participation thresholds are heavily tested. Memorize: noncontributory = 100% participation; contributory = 75% participation (a frequently cited industry minimum).
Under a noncontributory group health plan, what percentage of eligible employees must be covered, and who pays the premium?
An employee declines group coverage during the 31-day eligibility period, then asks to enroll three months later. What is the most likely consequence?
The Master Contract Structure and an Eligibility Worked Example
Group health rests on a master contract issued to the plan sponsor (employer, association, or trust); individual members receive a certificate of coverage, not their own policy. This structure drives several exam facts: the employer is the policyowner, the insurer can change the master plan at renewal, and the member's rights flow through the certificate.
| Group document | Held by | Function |
|---|---|---|
| Master contract / policy | Employer/sponsor | The actual insurance contract |
| Certificate of coverage | Each employee | Evidence of coverage and summary of benefits |
| Summary Plan Description (ERISA) | Each participant | Plan terms in plain language |
Worked eligibility-timeline example: a firm uses a 90-day probationary period and a 31-day eligibility (enrollment) period. An employee hired March 1 first becomes eligible on May 30 (after 90 days) and then has until roughly June 30 to enroll without being a late enrollee. Enrolling on time avoids evidence of insurability; missing the 31-day window can require proof of insurability or force the employee to wait for open enrollment. The actively-at-work provision then defers the effective date if the employee is not performing duties on the day coverage would start.
The contributory vs. noncontributory distinction sets the participation threshold and directly affects adverse selection. In a noncontributory plan the employer pays the entire premium, so 100% of eligible employees must be covered — no one self-selects out, which eliminates adverse selection. In a contributory plan employees share the cost, so insurers require a high participation floor (commonly 75%) to keep the pool balanced. Worked: of 100 eligible employees in a contributory plan requiring 75%, at least 75 must enroll; only 70 enrolling lets the insurer decline or re-rate the case.
The exam pairs the funding type with the required percentage as a single fact.