When a serious illness or injury interrupts your ability to work, the financial pressure often arrives long before the paperwork makes sense. Paychecks may slow down or stop. Medical appointments multiply. Everyday decisions suddenly involve insurance language, deadlines, and forms that seem written for someone else.
That is where long-term disability claims come in.
Long-term disability, often called LTD, is income-replacement coverage that may pay a portion of your earnings when a medical condition keeps you from working for an extended period. Some policies come through an employer benefit plan. Others are purchased privately. Either way, the process usually turns on documentation, deadlines, and the policy’s exact definition of disability.
If this is all new to you, you are not alone. According to the U.S. Bureau of Labor Statistics, people with disabilities made up about 13% of the U.S. population in 2024, and the employment-population ratio for people with disabilities was 22.7%, compared with 65.5% for people without disabilities. At the same time, Social Security reported that as of December 31, 2025, more than 7.1 million disabled workers were receiving disability benefits under OASDI. Those numbers help show how common work-limiting health conditions are, and how central income protection can become after a major medical event. BLS SSA
In this post you’ll learn what long-term disability coverage is, how claims usually work, what insurance companies often look for, where people get tripped up, and when legal help may become especially important. If you want a deeper overview of policy language, ERISA issues, and denial patterns, it may also help to read our guide on how these disability claims usually get analyzed and challenged.
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Long-term disability insurance is designed to replace part of your income when a health condition keeps you from performing your job for a longer period than short-term disability covers.
In many workplace plans, LTD benefits begin after an elimination period or waiting period ends. That period often starts after sick leave, paid time off, or short-term disability benefits run out. The monthly benefit is commonly a percentage of pre-disability earnings, though the exact percentage, offsets, and caps depend on the policy.
What matters most for a beginner is this: an LTD claim is rarely just about having a diagnosis. It is usually about proving that the diagnosis causes work-related functional limits severe enough to meet the policy definition of disability.
That distinction surprises many people. A person may have surgery, cancer treatment, multiple sclerosis, a spinal disorder, long COVID, a cardiac condition, a traumatic brain injury, severe depression, or another serious illness and still run into claim problems if the file does not clearly connect the medical condition to specific job limitations.
There are two common sources:
Many people first encounter LTD through work benefits. If the plan comes through a private employer, it is often governed by ERISA, the federal law that regulates many employee benefit plans. The U.S. Department of Labor explains that claim timing, appeals, and plan procedures are controlled by plan documents and federal claims rules. Department of Labor
Professionals, business owners, and higher earners sometimes buy private disability insurance directly. These claims are often governed by state contract law rather than ERISA. That can affect deadlines, remedies, evidence rules, and litigation strategy.
The difference matters because employer-plan LTD claims and private-policy LTD claims do not always follow the same rules. The paperwork can look similar, but the legal framework may be very different.