A plain-English guide to long-term disability (LTD) insurance, Social Security Disability Insurance (SSDI), and how both coordinate with workers' compensation after a work injury — who qualifies, the SSDI timeline and five-month wait, own- versus any-occupation definitions, offsets, why claims get denied, how appeals work, and when an attorney is worth it.
General information, not legal, medical, or financial advice. Disability rules vary by policy, program and state and change over time — consult a licensed disability attorney and read your own plan documents before relying on anything here.
If a serious illness or a work injury stops you from earning, you may have three different safety nets in play at once: long-term disability (LTD) insurance, Social Security Disability Insurance (SSDI), and workers' compensation. They sound similar, but they come from different places, use different definitions of "disabled," and — importantly — interact with each other in ways that can raise or lower what actually lands in your bank account. Getting one approved can reduce another. Wording a settlement carelessly can cost you benefits. This guide walks through what each program is, who qualifies, how they coordinate, why claims get denied, and how the appeals process works, so you can navigate all three with your eyes open.
It helps to see at a glance how the three differ before getting into the details:
| Program | Who runs it | Covers |
|---|---|---|
| Workers' comp | State system, employer's insurer | Only injuries and illnesses that are work-related; pays medical care and a portion of lost wages. |
| SSDI | Federal — the Social Security Administration | Any qualifying disability, work-related or not, expected to last 12+ months; requires enough recent work history. |
| LTD insurance | Private insurer (group or individual policy) | Any covered disability under the policy's terms; replaces a percentage of income, subject to offsets. |
The key takeaways: workers' comp only applies if the injury arose out of your job; SSDI and LTD apply whether or not the cause was work-related. SSDI is an earned federal benefit with strict, nationwide eligibility rules. LTD is a contract — what it pays and when is governed by the fine print of your specific policy.
LTD insurance replaces part of your income — commonly around 50% to 60% of base pay — when an illness or injury keeps you from working for an extended period. It usually starts after a waiting (elimination) period of about 90 to 180 days, often picking up where short-term disability leaves off. You may have LTD through your employer (a "group" policy) or you may have bought it individually.
That distinction matters more than people expect. Most employer group policies are governed by a federal law called ERISA, which sets the rules for how you claim, how you appeal, and what a court may later review. Individual policies you buy yourself are generally governed by state insurance law and can give you more latitude in a dispute. Either way, the policy document — not your assumptions — controls what counts as a disability, how long benefits last, and what reduces them.
This single definition decides a large share of LTD disputes. Under an own-occupation standard, you are disabled if you cannot perform the material duties of your own job. Under an any-occupation standard, you are disabled only if you cannot perform any job you're reasonably suited for by education, training and experience. A surgeon with a hand tremor may be disabled from surgery (own-occupation) yet able to teach or consult (so, not disabled under any-occupation).
Many group policies use own-occupation for an initial window — frequently 24 months — then automatically switch to the stricter any-occupation test. That switch is one of the most common moments a long-running LTD claim gets terminated, because a worker who clearly couldn't do their old job is suddenly judged against every job they might theoretically do. If you have LTD, find out which standard applies and when it changes.
Many LTD policies contain a pre-existing condition clause. In broad terms, if you were treated for a condition during a defined look-back period — often the 3 to 12 months before your coverage started — and you become disabled from that condition within an early window of the policy (commonly the first 12 months), the policy may not pay. The point is to stop people from buying coverage only after a problem surfaces. Policies also carry other exclusions — for example, limits on disabilities tied to mental health or substance use, often capped at 24 months. The exact look-back periods and exclusions are spelled out in your policy, and that language is what governs, so read it carefully.
SSDI is a federal benefit run by the Social Security Administration and funded through the payroll taxes you've paid. To qualify you generally need two things: enough recent work credits (you've worked and paid into Social Security long enough and recently enough), and a medically determinable disability that prevents substantial gainful work and is expected to last at least 12 months or to result in death. Unlike some other aid programs, SSDI is not means-tested on your assets — it's based on your work record and your medical condition. Your monthly amount is calculated from your past earnings, not from how severe the disability is.
Two separate clocks confuse almost everyone, so it's worth separating them:
Because of both clocks, the practical advice is consistent: apply as soon as you reasonably can, and apply completely. Delay only pushes everything further out, and SSDI back pay is limited in how far it can reach.
This is where people lose money they didn't know they were giving up. The programs are deliberately designed not to stack on top of each other beyond certain limits.
You can receive SSDI and workers' compensation at the same time, but federal rules coordinate them. In general, your combined SSDI plus workers' comp cannot exceed 80% of your prior average earnings. If together they would, Social Security reduces (offsets) your SSDI so the total stays under the cap — typically the workers' comp is paid in full and the SSDI is trimmed. When a workers' comp claim ends in a lump-sum settlement, how that lump sum is described in the settlement document can change how Social Security spreads it out for offset purposes. Language that prorates the settlement over your expected lifetime can soften the offset; sloppy wording can cost you SSDI. This is a concrete reason to have settlement papers reviewed before signing — a point our companion guide on workers' comp settlement amounts returns to.
Group LTD policies almost always coordinate with SSDI too — but differently. Most require you to apply for SSDI and then reduce your LTD payment by the SSDI amount you receive, often close to dollar-for-dollar. So winning SSDI may not increase your total monthly income much; instead it shifts who pays. One trap: if SSDI later awards back pay covering months the LTD insurer already paid you in full, you may owe the insurer a reimbursement out of that back pay. Set the money aside until the accounting is finalized so a windfall doesn't turn into a surprise bill.
A first denial is common and is not the end of the road — but it helps to know why claims fail so you can avoid the avoidable reasons:
| Reason | What it means |
|---|---|
| Insufficient medical evidence | The records don't clearly document the diagnosis and, crucially, the functional limits that stop you from working. |
| Doesn't meet the definition | You may be genuinely unwell but not meet the policy's or SSDI's specific standard (e.g., the any-occupation test). |
| Gaps in treatment | Long stretches without care suggest, fairly or not, that the condition isn't as limiting as claimed. |
| Earnings too high | For SSDI, working above the substantial-gainful-activity level can disqualify you. |
| Not enough work credits | SSDI requires a sufficient, recent work history; without it you may not be insured for SSDI. |
| Pre-existing exclusion | An LTD policy's look-back clause excludes a disability tied to a recently treated condition. |
| Missed deadlines / paperwork | A late form or appeal can sink an otherwise strong claim on procedure alone. |
| Surveillance or inconsistency | Activity that contradicts your stated limitations — on social media or video — is used to deny. |
Both systems give you a path to challenge a denial, but they work differently — and the deadlines are unforgiving.
An SSDI denial generally moves through up to four stages, each with a deadline that is usually 60 days from the prior decision:
For an employer LTD policy governed by ERISA, you typically must first complete the insurer's internal appeal before you can sue. This is the single most important fact about ERISA LTD claims: a court reviewing the case later will, in many situations, look only at the record that existed when the insurer made its final decision. In plain terms, the evidence you fail to submit during that internal appeal may be evidence you never get to use. That makes the internal appeal the place to build a complete, well-documented file — not an afterthought. Individual (non-ERISA) policies generally allow a more conventional lawsuit under state law, but you should still follow the policy's appeal steps.
You can file an initial SSDI application or LTD claim yourself, and many people do. Representation tends to matter most once things get complicated: a denial, the own- to any-occupation switch, an ERISA internal appeal where the record is about to close, a workers' comp settlement that could trigger an SSDI offset, or an ALJ hearing where presentation of evidence makes a real difference.
Fee structures differ by track. SSDI representatives generally work on a contingency fee set by federal rules: a percentage of your past-due benefits up to a capped dollar amount, and they're typically paid only if you win. LTD attorneys often work on contingency as well, taking a percentage of the benefits recovered, though arrangements vary. The honest, neutral guidance here is simple: there is no single "best" firm, and you should be skeptical of anyone who guarantees a result. Interview more than one, ask exactly what the fee covers and what happens if you lose, and get the terms in writing before you sign. A good representative explains your odds candidly rather than overpromising.
If your disability stems from a work injury, these companion resources on AEGIS - AMA may help you frame the workers' compensation side of the picture:
What is the difference between long-term disability insurance and SSDI?
LTD is private insurance — usually through an employer or bought individually — that replaces a percentage of your income, often around 50% to 60%, when you can't work due to illness or injury. SSDI is a federal program run by the Social Security Administration, funded by payroll taxes, paying a benefit based on your past earnings if you have a qualifying work history and a disability expected to last at least 12 months or to result in death. Many people receive both, and an LTD policy will usually require you to apply for SSDI.
Can I receive SSDI and workers' compensation at the same time?
Yes, but they're coordinated through an offset. Under federal rules, your combined SSDI and workers' comp generally cannot exceed 80% of your prior average earnings; if they would, Social Security reduces your SSDI so the total stays within that cap. The workers' comp is usually paid in full and the SSDI is trimmed. How a lump-sum settlement is worded affects the offset, which is why careful drafting matters.
How long does it take to get SSDI, and what is the 5-month waiting period?
SSDI has a statutory five-month waiting period: benefits generally begin with the sixth full month after the date your disability is established to have begun. Separately, getting a decision takes time — an initial decision can take several months, and if you're denied, reconsideration and an administrative law judge hearing can add many more, sometimes over a year total. Filing promptly and completely helps avoid extra delay.
What does own-occupation vs. any-occupation mean in an LTD policy?
Own-occupation means you're disabled if you can't perform the material duties of your own job. Any-occupation means you're disabled only if you can't perform any job you're reasonably suited for by education, training and experience. Many group policies use own-occupation for an initial period — commonly 24 months — then switch to the stricter any-occupation standard, a frequent point at which benefits are terminated.
Why are long-term disability and SSDI claims denied?
Common reasons include insufficient medical evidence, a record that doesn't show you meet the definition of disability, gaps in treatment, missed deadlines, earnings above the allowed level, a pre-existing condition exclusion, or surveillance that contradicts your reported limitations. For SSDI specifically, too few recent work credits or a condition not expected to last 12 months are frequent reasons.
What is the SSDI appeals process if I'm denied?
There are generally four levels, each with a deadline usually of 60 days. First is reconsideration, a fresh review by someone new. Then a hearing before an administrative law judge, where you can testify and present evidence. After that come the Appeals Council and, finally, federal court. Many cases denied initially are approved at the hearing stage, so a first denial is not the end.
What is a pre-existing condition clause in LTD insurance?
Many policies won't pay for a disability caused by a condition you were treated for during a look-back period — often the 3 to 12 months before coverage began — if the disability starts within an early window, commonly the first 12 months. It's meant to discourage buying coverage only after a problem appears. Read the exact look-back and exclusion language in your policy, because the wording controls.
Do I need a disability attorney, and how are they paid?
You can apply on your own, and many initial SSDI applications are filed without a lawyer. Representation matters most at the appeal and hearing stage, or when an LTD insurer denies an ERISA-governed claim, where the record you build during the internal appeal can limit what a court later considers. SSDI representatives generally use a federally set contingency fee — a percentage of past-due benefits up to a capped amount. LTD fees vary, often contingency-based; always get the terms in writing first.
Does an LTD insurer require me to apply for SSDI?
Usually yes. Most group LTD policies require you to apply for SSDI and reduce your LTD payment by the SSDI you receive, often close to dollar-for-dollar, because the policy is designed to coordinate with it. If SSDI back pay is later awarded for a period the insurer already covered, you may owe a reimbursement, so keep that money aside until the accounting is settled.
How can I strengthen a disability claim?
Get consistent medical care and make sure your records document your diagnosis, your functional limitations, and how they prevent specific work tasks. Be specific and honest about what you can and cannot do. Meet every deadline, keep copies of everything, and ask your treating providers for clear statements that address the standard your policy or SSDI uses. For LTD claims under ERISA, build a complete record during the internal appeal, because courts often will not look beyond it later.
Are long-term disability and SSDI benefits taxable?
It depends on who paid the premiums and your total income. LTD benefits are generally taxable if your employer paid the premiums with pre-tax dollars, and generally tax-free if you paid with after-tax dollars. SSDI can be partly taxable if your combined income exceeds IRS thresholds. Because the rules interact with your other income, confirm your situation with a tax professional or current IRS guidance.
General information, not legal, medical, or financial advice — consult a licensed disability attorney and your plan documents. AEGIS - AMA is independent of any insurer, law firm or government agency. Eligibility rules, waiting periods, offset formulas, fee caps, exclusion clauses and tax treatment differ by policy, program and state and change over time. The descriptions of SSDI here follow the public guidance of the Social Security Administration, and the tax points reflect IRS guidance, but you should confirm current details with the relevant agency, read your own policy, and speak with a qualified attorney before acting.