If you've become too sick or injured to keep working, you may have heard that your employer offers long-term disability coverage — or that the federal government provides it through Social Security. Both are real options, but they work very differently. Understanding how each program operates, what it takes to qualify, and how the two can interact is the first step toward knowing where you stand.
Long-term disability (LTD) benefits from work typically refers to one of two things:
These are not the same program, and they don't share the same rules. Many workers pursue both simultaneously, and benefits from one can affect the other.
Private LTD plans are offered by employers through insurance carriers. Coverage varies significantly from one plan to the next, but most share a similar structure.
Short-term disability (STD) usually kicks in first — covering a portion of your salary for weeks or months after you become disabled. Once that period ends (typically 90 to 180 days), long-term disability benefits may begin if you meet the plan's definition of disability.
That definition matters enormously. Some plans use an "own occupation" standard — meaning you qualify if you can no longer do your specific job. Others use an "any occupation" standard — meaning you must be unable to perform virtually any type of work to continue receiving benefits. Many plans start with own-occupation and switch to any-occupation after two years.
Key variables in private LTD plans include:
Because private plans are contracts governed by the plan documents and federal ERISA law, disputes over denied claims follow a different process than SSDI appeals.
SSDI is also earned through work — but through payroll taxes paid into the Social Security system over your career, not through a specific employer's benefit plan.
To be insured for SSDI, you need a sufficient number of work credits. In 2024, you earn one credit for roughly every $1,730 in wages or self-employment income, up to four credits per year. Most workers need 40 credits total, with 20 earned in the last 10 years before becoming disabled — though younger workers may qualify with fewer credits. These thresholds adjust annually.
The Social Security Administration uses a five-step evaluation process. In plain terms, it examines:
Your RFC — a detailed assessment of what you can still do physically and mentally — is central to steps 4 and 5. Medical evidence from your treating providers shapes that determination significantly.
Most initial SSDI claims are reviewed by a Disability Determination Services (DDS) agency at the state level. Initial denials are common. From there, the process moves through several stages:
| Stage | What Happens |
|---|---|
| Initial Application | DDS reviews medical and work evidence |
| Reconsideration | A fresh DDS review if you appeal a denial |
| ALJ Hearing | An Administrative Law Judge hears your case in person or by video |
| Appeals Council | Reviews ALJ decisions for legal error |
| Federal Court | Final option if all SSA appeals are exhausted |
Most claimants who are ultimately approved wait 12 to 24 months or longer, depending on the stage at which they're approved and their local hearing office's backlog.
If approved, SSDI back pay covers the period from your established onset date (when SSA determines your disability began) through the approval date, minus a five-month waiting period. Back pay can be substantial for claimants who waited through multiple appeal stages.
Monthly benefit amounts are calculated from your lifetime earnings record — there is no flat rate. Benefits adjust annually through cost-of-living adjustments (COLAs).
After 24 months of receiving SSDI, you become eligible for Medicare — regardless of age. This waiting period begins from your first month of entitlement, not your approval date.
Many workers who become disabled have access to both an employer LTD plan and potential SSDI eligibility. The interaction between them is important:
The onset date SSA assigns matters for both programs, since it affects back pay calculations and when Medicare coverage begins.
No single factor determines whether someone successfully obtains long-term disability benefits — from an employer or through SSDI. The variables that drive individual results include:
The program landscape is consistent. How it maps onto any specific person's situation — their diagnosis, their earnings record, their plan documents, their appeal history — is a different question entirely.
