When Must Employers Offer COBRA Coverage?
A termination, a reduction in hours, or a divorce can turn a routine benefits question into a deadline-driven compliance issue. The question, “when must employers offer COBRA coverage?” has a precise answer under federal law, but the operational details determine whether your organization meets that obligation or creates avoidable exposure.
COBRA is not simply a continuation option to mention at offboarding. It is a regulated process with eligibility rules, notice deadlines, premium handling, and documentation requirements. For small and medium-sized employers, the cost of getting it wrong is rarely just a penalty. It can mean former employees without timely coverage information, HR time diverted into corrections, and an unexpected claim dispute.
When Must Employers Offer COBRA Coverage?
Federal COBRA generally applies when an employer had 20 or more employees on more than 50% of its typical business days during the prior calendar year and maintains a group health plan. Private-sector employers and state or local government employers can be subject to the rule. Federal government plans, church plans, and certain other arrangements follow different rules.
The 20-employee test is more nuanced than a headcount on one day. Both full-time and part-time employees count. A part-time employee is counted as a fraction based on the employee’s hours relative to a full-time schedule. Companies under common ownership or control may also need to be treated as a single employer for this purpose. A business with 14 employees on one payroll and 9 on another may not be able to assess COBRA applicability by looking at each entity in isolation.
If the federal threshold is met, the employer must offer continuation coverage to qualified beneficiaries after a qualifying event causes a loss of coverage. The obligation applies to group health benefits, including medical, dental, and vision coverage. It generally does not apply to life insurance, disability coverage, or most health flexible spending accounts. Health FSAs have their own limited COBRA rules, particularly when an employee has an unspent account balance.
Employers with fewer than 20 employees may still have obligations under state continuation laws, often called mini-COBRA. Those requirements vary by state and plan type. That distinction matters for employers operating in Texas, Oklahoma, or across state lines: being exempt from federal COBRA does not automatically eliminate continuation coverage responsibilities.
The Qualifying Events That Trigger an Offer
A COBRA offer is required only when there is both a qualifying event and a resulting loss of coverage. An employee leaving the company is not, by itself, enough if the individual was not enrolled in the group health plan or remains eligible under another active plan arrangement.
For employees, the most common qualifying events are termination of employment for reasons other than gross misconduct and a reduction in work hours that ends eligibility for benefits. A layoff, resignation, job elimination, move from full-time to part-time status, or leave arrangement that causes coverage to end can all trigger COBRA rights.
For spouses and dependent children, qualifying events can include the employee’s death, termination or reduction in hours, divorce or legal separation, the employee becoming entitled to Medicare, or a child losing dependent status under the plan. Retiree health coverage may also create special COBRA rights after an employer bankruptcy.
The gross-misconduct exception deserves caution. Federal COBRA does not require an offer after a termination for gross misconduct, but the law does not provide a clean universal definition. Treating an ordinary performance issue or policy violation as gross misconduct is a high-risk shortcut. If an employer relies on the exception, it should have well-documented facts and advice tailored to the situation.
Qualified beneficiaries are not limited to the employee
The employee, covered spouse, and covered dependent children may each be qualified beneficiaries with independent election rights. That means a former employee can decline COBRA while a spouse or child elects it. Enrollment records matter because only individuals covered the day before the qualifying event generally receive the right to continue coverage.
A child born to or adopted by a qualified beneficiary during COBRA coverage can also gain protected status. These details are why clean eligibility files and prompt carrier reconciliation are part of compliance, not merely administrative housekeeping.
What Employers Must Do and When
The compliance calendar starts before any employee leaves. Covered employees and spouses must receive a general COBRA notice when group health coverage begins. The plan must also maintain procedures for receiving notices from employees and dependents about certain events, such as divorce, legal separation, or a child losing dependent status.
When the employer learns of a termination, reduction in hours, death, Medicare entitlement, or bankruptcy event, it generally has 30 days to notify the plan administrator. If an outside administrator is handling COBRA, the administrator generally has 14 days after receiving that notice to send the election notice. If the employer is also the plan administrator, the combined deadline is generally 44 days after the qualifying event or loss of coverage, depending on the circumstance.
Employees and dependents usually have 60 days to notify the plan of a divorce, legal separation, or loss of dependent status. They also generally have 60 days to elect COBRA after receiving the election notice or losing coverage, whichever is later. Coverage can be elected retroactively, which means a former employee may submit claims for the coverage gap after making a timely election and payment.
The initial premium payment is typically due within 45 days after the election. Later payments have a 30-day grace period. Employers can charge up to 102% of the applicable premium, covering the cost of coverage plus a permitted administrative charge. Offering COBRA does not mean the employer must subsidize it, although severance agreements or workforce-reduction strategies sometimes include employer-paid continuation coverage for a defined period.
How Long COBRA Coverage Lasts
The standard continuation period following termination or a reduction in hours is 18 months. Other qualifying events, including death, divorce, legal separation, Medicare entitlement, or loss of dependent status, can provide up to 36 months of coverage.
Extensions can apply. A qualified beneficiary who is determined disabled under Social Security rules may be eligible for an 11-month extension, bringing the maximum period to 29 months in certain circumstances. A second qualifying event can extend coverage to 36 months for some family members. These rules are technical, and notices must explain applicable rights without creating promises that the plan cannot support.
COBRA can end early when premiums are not paid on time, the employer stops maintaining any group health plan, the qualified beneficiary becomes covered by another group health plan in certain circumstances, or the beneficiary becomes entitled to Medicare after electing COBRA. Early termination rules have exceptions, especially around preexisting-condition exclusions, so employers should avoid making coverage determinations based on assumptions.
The Administrative Failures That Create the Most Risk
Most COBRA breakdowns are process failures, not legal misunderstandings. HR may learn about a reduction in hours too late. Payroll may terminate deductions without flagging a loss of eligibility. A carrier file may show an end date that does not match the employer’s eligibility records. An election notice may go to an outdated address with no proof of mailing.
A defensible process connects program design, employee communication, and digital administration. The benefits eligibility rules should clearly define when active coverage ends. HR, payroll, and the COBRA administrator should use a defined handoff process. Departure checklists should capture the qualifying event, coverage end date, enrolled dependents, mailing address, and responsible party for issuing notices.
Four controls produce outsized results:
- Review prior-year employee counts and controlled-group status before assuming federal COBRA does not apply.
- Reconcile HRIS, payroll, carrier, and COBRA administrator files on a set schedule.
- Document notice dates, addresses, delivery method, elections, payments, and coverage changes.
- Audit vendor performance, because outsourcing administration does not transfer the employer’s underlying compliance exposure.
The results you are actually buying are fewer missed deadlines, fewer manual corrections, and a cleaner experience for people leaving the organization. A COBRA administrator can take admin off your desk, but only if the data feeding that administrator is accurate and timely.
A Better Way to Handle COBRA at Separation
Treat COBRA as one component of an offboarding system, not a standalone letter. Before an employee’s final day, confirm whether the organization is subject to federal COBRA or state continuation rules, identify everyone enrolled in coverage, verify the qualifying event, and establish the active coverage end date under the plan.
Then move the event through a documented workflow with ownership and deadlines. HR should not have to guess whether payroll, a broker, the carrier, or a third-party administrator sent the required notice. Assign responsibility, retain evidence, and investigate exceptions immediately. This approach also improves ACA reporting, eligibility administration, and reconciliation because the same workforce data is being managed with greater discipline.
COBRA rules are detailed, and facts can change the answer. When a termination, ownership structure, eligibility issue, or state continuation requirement is unclear, confirm the decision with qualified benefits or legal guidance before the notice window closes. The practical goal is simple: give eligible people the coverage choice the law requires while keeping compliance risk and administrative friction out of your operating model.