One of your people gets orders. They are headed to active duty for the next year. Before they leave, they ask the question that always lands on your desk. "What happens to my health insurance?"

That question has a legal answer. It is not your company policy. It is federal law. The Uniformed Services Employment and Reemployment Rights Act, known as USERRA, sets the rules. And the rules are stricter than most HR teams expect.

That is the part that trips most benefits teams up. Most benefits managers reach for COBRA. COBRA gives 18 months. USERRA gives 24. The premium math is different too. So is who the rule even applies to. Get it wrong and you face a federal complaint and back pay. A Department of Labor investigation can follow.

This guide breaks down the 24-month rule, what it costs you, and what it costs the employee. We will also cover the small mistakes that turn a routine military leave into a legal problem. I am Brad Tachi, a Navy veteran and the founder of Best Military Resume. I have watched both sides of this from the inside.

What Is the USERRA 24-Month Health Insurance Rule?

USERRA gives a service member the right to keep their employer health plan during military leave. The coverage can last up to 24 months. It covers the employee and their dependents.

The clock starts the day the leave begins. It runs for 24 months, or until the day the person fails to return to work on time, whichever comes first. So if your employee comes back early, the coverage period ends when their service ends.

The legal basis is 38 U.S.C. 4317. The federal rules that explain it sit in 20 CFR 1002.164. That section covers the 24-month period. The cost rules sit in 20 CFR 1002.166. These are the sections your benefits team should bookmark.

One thing to be clear on. The employee elects this coverage. It is their choice. They are not forced to keep the plan. But if they want it, you cannot refuse it. The right is theirs, not yours.

How Much Does USERRA Health Continuation Cost?

The cost depends on one number. How long is the military service?

There are two cases. The split happens at 30 days. This is the rule benefits teams get wrong most often, so read it twice.

Service of 30 Days or Fewer

If the service lasts 30 days or fewer, the employee pays nothing extra. They keep paying their normal share, the same payroll deduction as any other week. You keep paying the employer share, just like always.

Think weekend drills and short trainings. The benefit does not change. The employee is treated as if they never left.

Service of 31 Days or More

Once service hits 31 days, the rule shifts. Now the employee can be charged up to 102 percent of the full premium. That means the full cost of the plan, plus a 2 percent administrative fee.

So if a plan costs 800 dollars a month total, the employee could be charged up to 816 dollars. That covers the whole premium and the 2 percent. This mirrors how COBRA works.

You are not required to charge the full 102 percent. Some employers cover part of it as a benefit. But that is your choice. The law sets the ceiling, not the floor.

A Real Cost Example

Numbers make this clear. Say one of your employees has a family plan. The total premium is 1,500 dollars a month. The employee normally pays 400 of that through payroll. You cover the other 1,100.

The employee gets orders for a 10-month deployment. That is far past 30 days. So the 31-day rule applies. You may charge up to 102 percent of the full 1,500. That works out to 1,530 dollars a month, the full premium plus 30 dollars for the 2 percent fee.

The employee decides if that is worth it. Many keep the plan to cover a spouse and kids back home. Some drop it and use military coverage instead. Either way, the choice is theirs, and you must offer the option.

Now run the short version. The same employee does a two-week annual training. That is under 30 days. They keep paying 400, you keep paying 1,100, and nothing changes. The deduction never moves.

Who Counts and When Does the Right Start?

USERRA covers more people than employers expect. It is not just active-duty deployments. It covers Guard and Reserve drills, annual training, active-duty orders, and even some funeral honors duty. If the service is in a uniformed service, it counts.

The right starts when the employee gives notice of upcoming service. That notice can be verbal or written. The employee does not have to hand you a copy of their orders to trigger it. Many do not even have orders in hand yet when they tell you.

There are limits. The total period of service generally cannot pass five years with one employer. Many types of duty do not count toward that cap. The employee also has to give notice unless military necessity makes that impossible.

Once notice is given, your duty is simple. Offer the health continuation. Quote the right cost. Keep the plan available for the employee to elect. You do not get to decide whether they qualify based on rank, role, or how long they have worked for you.

How Is USERRA Different From COBRA?

This is where most benefits teams slip. They treat military leave like any other loss of coverage and hand the employee a COBRA notice. That can shortchange the employee and put you out of step with the law.

The two laws look similar. They are not the same. The gaps are worth knowing.

First, the length. COBRA gives 18 months. USERRA gives up to 24. That is six extra months an employee is entitled to under USERRA.

Second, who it covers. COBRA only applies to employers with 20 or more employees. USERRA applies to every employer, no matter how small. A 5-person shop has the same USERRA duty as a 5,000-person company. You can read the COBRA threshold straight from the Department of Labor COBRA page.

Third, the trigger. COBRA kicks in after a "qualifying event" like a layoff. USERRA continuation is a standalone right tied to military service. It is not COBRA wearing a uniform.

What Happens When the Employee Returns?

The military leave ends. Your employee comes back. Now you have a second duty under USERRA, and it is easy to miss.

You must put them back on the health plan right away. No waiting period. No new enrollment hoops. No "wait for open enrollment." Coverage resumes as if they never left.

You also cannot apply exclusions that would not have applied if they stayed. So a pre-existing condition clause cannot be used against them on return. The one exception is for an illness or injury that the Secretary of Veterans Affairs determines is connected to their service. For those conditions, the health plan can impose a waiting period or exclusion.

This matters even if the employee dropped coverage during their leave. Maybe they used military health care while deployed and let the employer plan lapse. That is fine. They still get reinstated on return with no penalty.

The reinstatement right and the timing rules are part of the broader return-to-work framework. We cover the deadlines in our guide to the USERRA escalator principle and 5-year rule.

What Are the Most Common USERRA Health Mistakes?

I have seen the same errors over and over. Each one is avoidable. Each one can cost you in a Department of Labor complaint.

The biggest one is the COBRA swap. An employee gets orders, HR hands them an 18-month COBRA notice, and everyone moves on. The employee was entitled to 24 months under better terms. That gap is a violation.

The second is the small-employer myth. A company with 12 people assumes it owes nothing because it is under the COBRA threshold. USERRA does not care about your headcount.

The third is the return mistake. The employee comes back and HR makes them wait for open enrollment to get back on the plan. USERRA says reinstate now, not later.

One more thing. Document everything. Keep the election form, the notice you gave, the cost you quoted, and the date they returned. If a question comes up later, your paper trail is your defense. We walk through the documentation flow in our guide to managing an employee called to active duty.

How Should You Build This Into Your Leave Policy?

Do not wait for the first set of orders to figure this out. Build the rules into your written military leave policy now. When the orders come, you follow the playbook instead of scrambling.

Your policy should spell out who pays what at each service length. It should name the 24-month window. It should describe the return process so a manager does not have to guess.

The differential pay question often comes up alongside health coverage. Whether you top up military pay is a separate choice from health continuation. We cover that in our breakdown of whether employers have to pay differential pay.

If you employ Guard and Reserve members, this will not be a one-time event. Drill schedules and activations are part of the rhythm. Our guide to hiring National Guard and Reserve employees covers the full picture.

ESGR, the Employer Support of the Guard and Reserve, is a free resource for both sides. They mediate USERRA issues before they become complaints. Our overview of ESGR support for employers shows how to use them.

Why Getting This Right Pays Off

Handling military leave well is not just about avoiding a complaint. It is a hiring signal. Service members talk to each other. Word gets around about which employers treat them straight.

Veterans and Guard and Reserve members bring discipline, accountability, and skills that transfer fast. When you build a clean military leave policy, you make your company a place they want to work. That is a recruiting edge most employers leave on the table.

At Best Military Resume, we sit on the supply side of that equation. We add over 1,000 new veteran profiles every month, and we have built more than 60,000 resumes. Employers who want to hire from that pool can reach out to us directly.

Want to hire veterans and Guard and Reserve members who already know how to show up? Reach out to access BMR's veteran talent pool and connect with candidates ready to work. For the full picture on your legal duties, see our overview of USERRA employer obligations and our military leave policy template.