Short Term Disability vs FMLA: An Employer Guide
FMLA protects the job, short-term disability replaces income, and they usually run together. The differences, the thresholds, and what small employers owe.
Short Term Disability vs FMLA
One protects the job, the other replaces the income, and most employers confuse them until it matters
An employee tells you they need surgery and will be out for eight weeks. You now have about a day to work out what you owe them, and you will discover two things very quickly. The first is that FMLA and short-term disability are not the same, do not do the same job, and are constantly confused for each other. The second is that at a small business, there is a decent chance neither one applies to you at all, and the answer comes down to a policy you may not have written.
The confusion is understandable, because at a mid-size employer the two usually show up together. An employee goes on medical leave, their job is protected and their wages keep coming, and it feels like one thing. It is not one thing. It is two, doing different jobs, governed by different rules, with different thresholds.
This guide sorts it out from the employer side: what each one actually is, which applies to your business, how to run them together when both do, and what happens in the hard case where FMLA runs out and the person is still not ready to come back. Tracking leave and keeping the documentation is what I built FirstHR for. Serious caveat on this one: leave law is genuinely complicated and the consequences of getting it wrong are real, so this is general information rather than legal advice, and anything involving a termination during or after leave belongs with an employment attorney.
The Short Answer
FMLA protects the job. Short-term disability replaces the income. They are different things that typically run at the same time. An employee on medical leave at a covered employer is usually using both simultaneously: FMLA is keeping their job open, and the disability policy is paying their bills.
If you remember only one sentence from this article, make it the last one. Nearly every mistake employers make on this topic traces back to assuming that one of these does the other one's job: assuming FMLA pays, or assuming that an employee on disability leave automatically has their job protected. Neither is true.
Two Different Things
They sit in different categories entirely. One is a statute. The other is an insurance product. Holding that distinction is what makes everything else make sense.
Look at the fourth bullet in each column. FMLA pays nothing. Short-term disability protects nothing. Those two facts together explain why they are almost always used as a pair: neither is sufficient on its own, and an employee with only one of them has an obvious gap. The employee on FMLA with no disability coverage has a job to come back to and no money. The employee on disability with no FMLA has money and no guarantee of a job.
Side by Side
The complete comparison, on every dimension that actually matters to an employer making a decision.
| FMLA | Short-term disability | |
|---|---|---|
| What it is | A federal law | An insurance benefit |
| What it provides | Job protection | Partial wage replacement |
| Does it pay? | No. Entirely unpaid | Yes. Typically 50 to 70 percent of wages |
| Does it protect the job? | Yes, that is its purpose | No, not on its own |
| Who it applies to | Employers with 50 or more employees | Mandated in 5 states, voluntary elsewhere |
| Employee eligibility | 12 months employed, 1,250 hours worked | Set by the policy or the state program |
| How long | Up to 12 weeks per 12-month period | Varies. Commonly 12 to 26 weeks |
| Covers family members? | Yes, including care for a family member | No. Only the employee's own condition |
| Covers childbirth? | Yes, for bonding and the parent's condition | Yes, typically for the recovery period |
| Who pays for it | Nobody. It is a legal right | The employer, the employee, or the state |
The row worth pausing on is the second-to-last. FMLA covers caring for a family member with a serious health condition; short-term disability does not, because it insures the employee's own inability to work. That means an employee taking leave to care for a sick parent may have FMLA protection and no income at all, since there is no disability claim to make. That gap surprises people and it is worth explaining before someone hits it.
Are They the Same?
No, and the question comes up so often it deserves a direct answer. FMLA is not short-term disability. Short-term disability is not FMLA. They are not two names for the same thing, and one does not automatically come with the other.
The reason people conflate them is that at a company with more than 50 employees and a disability policy, an employee going out on medical leave triggers both at once, and from the employee's perspective it just looks like being on leave and getting paid. But an employee at a 30-person company with a disability policy is getting paid and has no FMLA protection. And an employee at a 200-person company with no disability policy has FMLA protection and no income. The pairing is common, not automatic.
You may also see people search for something called short-term FMLA. There is no such thing. FMLA is a single 12-week entitlement that can be taken continuously or, in qualifying circumstances, intermittently. Someone using that phrase means either intermittent FMLA leave or short-term disability, and it is worth asking which before answering.
Does FMLA Even Apply to You?
For most small businesses, the answer is no, and this is the fact that reframes the entire question. FMLA has a headcount threshold, and it is a high one.
That threshold means the entire FMLA framework, the 12 weeks, the job protection, the designation notices, is simply not your problem if you have 20 employees. What surprises employers is what follows from that: the employee facing surgery at your 20-person company has no federal job protection whatsoever. Nothing in federal law requires you to hold their job. Whether you do is your decision, governed by your own policy and by whatever your state requires.
That is a heavier responsibility than most small business owners realize they carry. The law is not making this decision for you, which means you are making it, and you should make it deliberately and in writing before you are making it about a specific person you know. State leave laws may also apply with far lower thresholds, so check those separately rather than assuming that being outside FMLA means being outside everything.
The Five States That Require STD
Short-term disability is voluntary in most of the country and mandatory in a handful of states, and unlike FMLA, those state mandates generally have no headcount threshold at all.
| State | Program | Note for employers |
|---|---|---|
| California | State Disability Insurance (SDI) | Funded by employee payroll deductions. Employers withhold and remit |
| Hawaii | Temporary Disability Insurance (TDI) | Employers may use the state plan or an approved private plan |
| New Jersey | Temporary Disability Insurance (TDI) | Both employer and employee contribute. Private plans permitted |
| New York | Disability Benefits Law (DBL) | Employers must provide coverage, typically through a carrier |
| Rhode Island | Temporary Disability Insurance (TDI) | Employee-funded. Employers cannot self-insure or substitute |
| Everywhere else | None. Voluntary | Offered only if the employer chooses, or bought privately |
The trap here is the absence of a size threshold. Hire one person who works in California and you are generally into the state disability insurance system regardless of whether your company has three employees or three hundred. For a distributed small team, that means your obligations are set by where your people work rather than by where your company is, and hiring into a new state can create a compliance obligation nobody told you about.
Puerto Rico operates a comparable mandatory program. Several states also run paid family and medical leave programs that are distinct from disability insurance and are expanding, which is a separate layer worth checking against every state where you employ someone.
Which Applies to Your Business?
Run your own situation against these five cases. One of them is you, and the fourth one is where most small businesses actually live.
Scenario four is the one worth sitting with. Under 50 employees, no disability coverage: neither FMLA nor STD applies, and an employee facing eight weeks of surgery and recovery has no job protection and no income from any source. Whatever they get, they get from you, because you decided to give it. That is not a legal problem; it is a policy vacuum, and it is worth filling before a real person is standing in it.
Running Them Concurrently
Where both apply, they are normally run at the same time rather than back to back, and that is both standard practice and generally permitted. The FMLA clock and the disability benefit run in parallel: the employee is paid by the policy while the law holds their job.
Employers occasionally imagine the alternative, which is running them sequentially, giving 12 weeks of disability leave and then 12 weeks of FMLA. That is not how it works, and it would give an employee 24 weeks of protected leave from a 12-week entitlement. Concurrent is the norm, and it is what you want.
The Employer Workflow
When someone tells you they need extended medical leave, this is the sequence. It works whether or not FMLA applies, because the first step is finding out.
Step five generates more complaints than any other. An employee who expected to be paid from day one discovers a week of no income at exactly the moment they are least able to absorb it, and they experience it as a bait and switch even though it is simply how the policy works. A sentence in advance prevents it entirely.
When FMLA Runs Out
This is the hardest case an employer faces here, and the intuitive response is the wrong one. The employee has used all 12 weeks, they are still not medically ready to return, and the temptation is to conclude that the protection has expired and you can terminate.
Note the threshold in that last sentence, because it matters enormously for a small business. The ADA applies at 15 employees, not 50. So a company with 25 people, which is entirely outside FMLA, may still be inside the ADA, and may still owe an interactive process and potentially additional leave as an accommodation. The FMLA question and the ADA question are different questions with different answers.
The short-term disability policy is a third clock again, and it does not care about either. It pays for as long as its terms say, which may be well past week 12. An employee can therefore be receiving disability payments, out of FMLA, and protected by the ADA, all at once. This is exactly the situation where employers act on intuition and get sued, and it is the one place in this article where the advice is unambiguous: talk to an employment attorney before you terminate anyone in this position.
FMLA vs Disability: ADA and Long-Term
People also search for FMLA versus disability without the short-term qualifier, which pulls in two other things worth distinguishing.
| What it is | What it does | Applies at | |
|---|---|---|---|
| FMLA | A federal leave law | Up to 12 weeks of unpaid job protection | 50+ employees |
| ADA | A federal disability rights law | Requires reasonable accommodation, which can include leave | 15+ employees |
| Short-term disability | Insurance | Replaces wages for weeks to months | Any size. Mandated in 5 states |
| Long-term disability | Insurance | Replaces wages for years, after STD ends | Any size. Always voluntary |
The ADA is the one small employers most often overlook, precisely because they have correctly worked out that FMLA does not apply to them and then stopped checking. Fifteen employees is a low bar, and the ADA's reasonable accommodation obligation is a real one that includes, in some circumstances, unpaid leave. Long-term disability is simply the insurance that picks up when short-term disability ends, and it is always voluntary.
What a Small Business Actually Owes
Strip it all back and here is the honest position for a business under 50 employees in a state with no disability mandate: FMLA does not apply, short-term disability is optional, and the only things governing what happens are the ADA, any state leave law, and your own written policy. That is a lot of discretion, and discretion means responsibility.
Common Mistakes
These recur, and every one of them is avoidable.
The most expensive is the termination at week 12. It feels legally clean, the entitlement has been exhausted, and it is precisely the move that produces an ADA claim. The FMLA clock running out is not the end of the analysis; it is the point at which a different analysis begins. If you take one operational instruction from this article, let it be that.
Frequently Asked Questions
Is short term disability the same as FMLA?
No. They are entirely different things that often apply at the same time. FMLA is a federal law that gives eligible employees up to 12 weeks of unpaid, job-protected leave and pays them nothing. Short-term disability is an insurance benefit that replaces a portion of an employee's wages while they cannot work and provides no job protection on its own. The simplest way to hold it: FMLA protects the job, short-term disability replaces the income. Most employees who take medical leave at a covered employer are using both simultaneously, which is why they get confused for one thing.
What is the difference between FMLA and short term disability?
The core differences are what they provide, what they require, and who they cover. FMLA is a law that provides unpaid job protection, applies only to employers with 50 or more employees, and requires the employee to have worked 12 months and 1,250 hours. Short-term disability is an insurance product that provides partial wage replacement, is mandated only in five states and otherwise voluntary, and has no federal headcount threshold. FMLA covers family reasons as well as the employee's own health condition, while short-term disability covers only the employee's own inability to work.
Can you use FMLA and short term disability at the same time?
Yes, and that is the normal design. When an employee has a serious health condition that qualifies for both, the employer typically runs FMLA and short-term disability concurrently: the FMLA clock and the disability benefit run at the same time, so the employee receives income from the disability policy while their job is protected by the law. Running them concurrently is standard practice and generally permitted, but the employer must designate the leave as FMLA-qualifying and provide the required notices. Failing to designate means the FMLA clock may not start at all.
Does FMLA pay you?
No. FMLA leave is unpaid. It is a job-protection law, not a wage-replacement program, and the statute requires no payment of any kind. Employees who are on FMLA leave and want income during it must get it from somewhere else: a short-term disability policy, a state disability or paid family leave program, accrued PTO or sick leave, or an employer's own paid leave policy. This is the single most common misunderstanding about FMLA, and it is worth stating plainly to any employee who requests it.
Does FMLA apply to small businesses?
Generally no. FMLA applies only to private employers with 50 or more employees for at least 20 workweeks in the current or preceding calendar year, and an employee is eligible only if they have worked for the employer for 12 months, worked at least 1,250 hours in the prior 12 months, and work at a site with 50 or more employees within 75 miles. A business with 20 people is generally not covered by FMLA at all. State leave laws may still apply with much lower thresholds, so being outside FMLA does not mean being outside all leave obligations.
Which states require short term disability?
Five states require employers to provide short-term disability coverage: California, Hawaii, New Jersey, New York, and Rhode Island. Puerto Rico has a comparable program. In the other 45 states, short-term disability is entirely voluntary and exists only if an employer chooses to offer it or an employee buys it privately. Importantly, the state mandates generally have no headcount threshold, which means hiring a single employee in one of those states can trigger the obligation regardless of how small your company is.
What happens when FMLA runs out but the employee is still not ready?
This is the hardest scenario employers face, and terminating automatically at week 12 is a mistake. When FMLA expires, the analysis shifts to the Americans with Disabilities Act, which may require additional unpaid leave as a reasonable accommodation if it would not cause undue hardship. Short-term disability may also still be paying, since the disability policy runs on its own schedule and does not stop because FMLA did. The employee's job protection under FMLA has ended, but their protection under the ADA may not have. Involve employment counsel before acting.
Is short term disability job protected?
Not on its own. Short-term disability is an insurance benefit that pays wages, and it says nothing about whether the employer must hold the job open. Job protection comes from a law, usually FMLA where it applies, potentially a state leave law, or the ADA. That distinction matters most at small businesses: an employee at a 20-person company who is receiving short-term disability payments may have no federal job protection at all, and the only thing keeping their job open is the employer's own policy and good judgment.
What is short term FMLA?
There is no such thing, and the phrase is a common conflation of two separate concepts. FMLA is a single leave entitlement of up to 12 weeks, which can be taken continuously or, in some circumstances, intermittently in smaller blocks. People searching for short term FMLA usually mean either intermittent FMLA leave, which is a real thing, or short-term disability, which is a different thing entirely. If someone in your business uses the phrase, clarify which they mean before answering, because the two have very different implications.
Do you have to offer short term disability?
Only in five states: California, Hawaii, New Jersey, New York, and Rhode Island, plus Puerto Rico. Everywhere else it is voluntary. That said, it is a relatively inexpensive benefit that fills a real gap, especially at a small business where FMLA does not apply and an employee facing surgery or a serious illness would otherwise have no income at all. For an employer under 50 employees, offering short-term disability is often the single most meaningful thing you can do for someone in that situation.