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. I run a small company myself, and this is the guide I would want that day: which rules apply to you, how they fit together, and what to do when protected leave runs out before the person can return.
Two things become clear very quickly. First, the Family and Medical Leave Act (FMLA) and short-term disability are different things that are constantly confused for each other. Second, at a small business there is a decent chance neither one applies, and what you owe then comes down to state law, the Americans with Disabilities Act (ADA) at 15 or more employees, and 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.
Two sets of rules also mean two sets of paperwork. Keeping the leave paperwork in one place and assigning the follow-up tasks with deadlines is part of what I built FirstHR for. Serious caveat on this one: leave law is genuinely complicated and getting it wrong has real consequences, so this is general information rather than legal advice. 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. When a covered employer also offers disability coverage, an employee on medical leave is usually using both at once: 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
FMLA and short-term disability sit in different categories entirely. One is a statute. The other is an insurance product. Hold on to that distinction and everything else in this guide falls into place.
Look at the fourth bullet in each column. FMLA pays nothing. Short-term disability protects nothing. Those two facts together explain why they are so often 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
Side by side, the two differ on almost every dimension that matters to an employer making a decision, from what each one is to who pays for it.
Two of the rows below report national medians rather than legal rules. According to the Bureau of Labor Statistics National Compensation Survey (March 2014), the median short-term disability plan replaces 60 percent of earnings, and 93 percent of covered private-industry workers sit in a fixed-duration plan whose median length is 26 weeks.
| 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. A median 60 percent of earnings |
| Does it protect the job? | Yes, that is its purpose | No, not on its own |
| Who it applies to | Private 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 | Set by the plan. A median of 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 | No wages. The employer maintains group health coverage | The employer, the employee, or both |
The row worth pausing on is the one about family members. 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.
An employee taking leave to care for a sick parent may therefore 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.
The last row carries a cost of its own. FMLA leave is unpaid, but the Department of Labor (DOL) makes clear in Fact Sheet 28 that a covered employer must continue the employee's group health coverage on the same terms as if they had not taken leave. A long leave therefore still costs the business its share of the premium.
Are They the Same?
No. FMLA is not short-term disability, and 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 50 or more employees and a disability policy, an employee going out on medical leave triggers both at once. From the employee's perspective, it just looks like being on leave and getting paid.
The pairing is common, not automatic. An employee at a 30-person company with a disability policy is getting paid and has no FMLA protection. An employee at a 200-person company with no disability policy has FMLA protection and no income.
You may also hear people ask 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. The Family and Medical Leave Act 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: the employee facing surgery at your 20-person company has no FMLA job protection.
The ADA, which reaches employers at 15 employees, may still require leave as a reasonable accommodation: an adjustment to the job or the usual rules that an employee with a disability needs. Below 15, nothing in federal law requires you to hold the job.
Beyond any federal requirement, holding the job 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, so you are. 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, and California's CFRA (the California Family Rights Act) is the clearest example, 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 five states, and unlike FMLA, those state mandates generally have no headcount threshold at all.
The Department of Labor's 2023 comparison of state temporary disability laws shows how low the bar sits: every program reaches an employer with a single worker. California adds a $100 quarterly payroll test, New Jersey a $1,000 annual payroll test, and New York 30 days of employment.
| State | Program | Note for employers |
|---|---|---|
| California | State Disability Insurance (SDI) | Funded by employee payroll deductions. Employers withhold and remit |
| Hawaii | Temporary Disability Insurance (TDI) | No state fund to join. A carrier policy, an approved self-insured plan, or a union contract |
| 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, withholding SDI tax from their pay regardless of whether your company has three employees or three hundred.
For a distributed small team, the missing threshold means your obligations are set by where your people work rather than by where your company is. Hiring into a new state can create a compliance obligation nobody told you about.
Hawaii handles the mandate differently, because there is no state fund to join. Per the state Disability Compensation Division, a Hawaii employer provides TDI by buying a policy from an authorized carrier, by adopting a self-insured plan the Division approves, or through a collective bargaining agreement whose sick leave benefits are at least as favorable as the TDI law requires.
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.
How Group Short Term Disability Works
In the other 45 states, coverage exists only if you buy it, and what you buy is a group short term disability policy from a carrier, usually through a broker. Group means the contract covers an eligible class of employees as a whole, instead of the carrier underwriting (evaluating and pricing) each person separately.
Two decisions are yours. The first is who pays: employer-paid, where the company covers the premium for everyone in the class, or voluntary, where the employees who want it pay by payroll deduction. The second is the terms: how long the waiting period runs, what share of wages the plan replaces, and how many weeks the benefit lasts.
Who pays the premium also settles who pays the tax. Under IRS Publication 525, benefits from a plan the employer paid for are taxable income to the employee, while benefits funded by premiums the employee paid with after-tax dollars are not. A company-paid plan replacing 60 percent of wages therefore puts less than 60 percent in the employee's account.
What group coverage still does not do is hold the job. It is an insurance contract between the business, the carrier, and the employee, and it is silent on the role. At a company FMLA does not reach, a promise to hold the job can come only from state law, the ADA at 15 or more employees, or your own leave policy.
Which Applies to Your Business?
Which one applies depends mostly on your headcount, whether the employee has short-term disability coverage, and the state where they work. Run your own situation against these five cases, because one of them is you.
The fourth case is where most small businesses actually live. According to the Bureau of Labor Statistics National Compensation Survey (March 2026), only 30 percent of private-industry workers at establishments with fewer than 50 workers had access to a short-term disability plan.
Scenario four is the one worth sitting with. Under 50 employees, with no disability coverage and no state paid leave program, neither FMLA nor STD applies. An employee facing eight weeks of surgery and recovery has no FMLA job protection and no income from any source beyond whatever PTO they have banked.
Whatever pay that employee gets, 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, and the regulations allow it. Under 29 CFR 825.207(d), leave taken under a disability plan counts as FMLA leave when the condition qualifies, and the employer may designate it and count it against the 12 weeks. The employee is paid by the policy while the law holds their job.
Employers occasionally imagine the alternative: running them back to back, with 12 weeks of disability leave followed by 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 an extended medical leave of absence, 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.
The sheet below is what I use to hold the workflow in one place for a single leave. It forces the two clocks apart, makes you calculate the unpaid gap before the employee discovers it, and puts a date on the review that has to happen if the leave runs long.
When FMLA Runs Out
FMLA running out 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: 42 U.S.C. 12111(5)(A) defines a covered employer as one with 15 or more employees for each working day in each of 20 or more calendar weeks in the current or preceding calendar year.
A company with 25 people, which is entirely outside FMLA, may therefore still be inside the ADA. It may still owe an interactive process (a good-faith back-and-forth with the employee about what would let them work) 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 runs on a third clock, 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.
That combination is exactly where employers act on intuition and get sued. It is also the one place in this article where the advice is unambiguous: talk to an employment attorney before you terminate anyone in this position.
Return to Work Rules After Disability Leave
The return is governed by the leave law rather than the disability policy. Where FMLA applies, the employee is restored to the same or an equivalent job, and the carrier stopping payments has no bearing on that. Where FMLA does not apply, the ADA can still require reinstatement at 15 or more employees.
EEOC enforcement guidance says an employee granted leave as a reasonable accommodation is entitled to return to the same position unless holding it open would impose an undue hardship. Below 15 employees, no federal law requires reinstatement after medical leave, and your written policy and state law are what the employee is relying on.
You may require a fitness-for-duty certification before the employee comes back, but only if you said so at the start of the leave. Under 29 CFR 825.312, the designation notice has to state that the certification will be required and whether it must address the employee's ability to perform the essential functions of the job. Do not spring the requirement on somebody at the door.
The larger risk sits in a policy many businesses already have without examining it: the 100 percent healed rule, which requires an employee to come back with no medical restrictions at all.
EEOC guidance on employer-provided leave and the ADA (May 2016) states that an employer violates the ADA when it applies that rule to an employee with a disability who can do the job with or without a reasonable accommodation, unless the employer can show the needed accommodation would cause an undue hardship. That rule sits quietly written into a lot of return-to-work forms.
A doctor's release that comes back with lifting limits or reduced hours therefore starts the accommodation conversation instead of ending it. Keep the release, the restrictions, and what you agreed on one page, and run every return through the same return-to-work form so the questions do not change with the person.
FMLA vs Disability: ADA and Long-Term
Drop the short-term qualifier and FMLA versus disability pulls in two more things worth distinguishing: the ADA, a disability rights law that can require leave, and long-term disability, the insurance that takes over when short-term coverage ends.
| 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 sits with the rest of your voluntary benefits. It is a budgeting question rather than a compliance one, since no state mandates it, but it is the layer an employee falls onto when a recovery outlasts the short-term plan, which runs 26 weeks in the median fixed-duration plan.
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 at 15 or more employees, any state leave law, and your own written policy. That is a lot of discretion, and discretion means responsibility.
Common Mistakes
The same mistakes come up again and again, and every one of them is avoidable.
The most expensive is the termination at week 12. It feels legally clean because the entitlement has been used up, yet 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 two separate things that often apply to the same leave. FMLA is a federal statute: an eligible employee can take up to 12 weeks off without pay and then return to their job or an equivalent one. Short-term disability is insurance: it pays a share of the employee's wages while their own illness or injury keeps them from working, but nothing in it requires anyone to keep their job open. Put simply, one guards the job and the other covers part of the paycheck. When a covered employer also carries a disability plan, most medical leaves draw on both at once, which is exactly why people mistake them for a single benefit.
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, covers a private business only once it employs 50 or more people, 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 pays only when the employee's own condition keeps them from working.
Can you use FMLA and short term disability at the same time?
Yes, and that is how the two are meant to work together. When an employee's serious health condition qualifies for both, the employer normally runs them side by side: the disability policy pays part of the employee's wages while FMLA keeps their job safe, and the time away counts against their FMLA entitlement as it goes. The FMLA regulations allow this, but it only happens if the employer formally designates the leave as FMLA leave and sends the employee the notices the law requires. Skip that step and the FMLA entitlement may never start counting down, so the employee could still claim all of it after a long absence.
Does FMLA pay you?
No. FMLA leave is unpaid. It is a job-protection law, not a wage-replacement program, so the employer owes no wages for the time off, although a covered employer must keep the employee's group health insurance running throughout the leave. Employees on FMLA leave who 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 reaches a private business only after it has had 50 or more employees in each of at least 20 workweeks during the current or preceding calendar year. Even then, a worker qualifies only after 12 months with the employer and at least 1,250 hours worked in the prior 12 months, and only if at least 50 of the employer's employees work within 75 miles of their worksite. A private company with 20 people is generally not covered at all. That does not end the question, though. A state leave law may still apply at a much lower headcount, and once you have 15 employees, the ADA can oblige you to grant time off as an accommodation for a disability. Falling outside FMLA does not mean you are free of every leave obligation.
Which states require short term disability?
Five states require short-term disability coverage for workers: California, Hawaii, New Jersey, New York, and Rhode Island. Puerto Rico runs a comparable program. The five states do not all deliver that coverage the same way. California and Rhode Island run state funds financed by employee payroll deductions, though California also lets an employer use an approved voluntary plan instead. New Jersey and New York both permit approved private plans alongside the state route. Hawaii has no state fund for employers to join, so an employer there covers its workers through a policy from an authorized insurance carrier, a self-insured plan approved by the state's Disability Compensation Division, or a collective bargaining agreement. In the other 45 states short-term disability is voluntary. The five mandates generally carry no headcount threshold, so hiring a single employee in one of those five states can trigger the obligation.
What happens when FMLA runs out but the employee is still not ready?
The analysis moves to the Americans with Disabilities Act (ADA), so ending the employment automatically once week 12 is over is a mistake. Under the ADA, more unpaid time off can be a reasonable accommodation, and the employer may have to grant it unless that would put an undue hardship on the business. The disability policy may also still be paying, because it follows its own terms rather than the FMLA calendar. In other words, the FMLA protection is gone, but the ADA may still protect the employee's job. This is the hardest scenario employers face, and the one where you should bring in 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 10-person company who is receiving short-term disability payments has no federal job protection at all, because FMLA starts at 50 employees and the ADA at 15. What keeps their job open is any state leave law plus the employer's own policy and good judgment.
What is short term FMLA?
There is no such thing as short term FMLA; the phrase blends two separate ideas. FMLA gives an eligible employee a single entitlement of up to 12 weeks, which they can use all at once or, when the situation qualifies, in smaller pieces spread over time. Someone who asks for short term FMLA usually means one of two things: intermittent FMLA leave, which does exist, or short-term disability, an insurance benefit that replaces part of the employee's wages and is not a leave law at all. Find out which one the person has in mind before you answer, because the two lead to very different obligations.
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 could otherwise be left with 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.
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