Health problems that keep you from doing your job fall into a wide range, from musculoskeletal injuries and heart disease to depression, PTSD, and cognitive impairments after a stroke. Federal law responds to conditions that limit your ability to work from two directions: the Americans with Disabilities Act protects your right to stay employed with reasonable changes to the job, and Social Security pays disability benefits when a condition stops you from earning more than $1,690 a month in 2026.
Physical Conditions That Commonly Limit Work
Musculoskeletal problems drive many people out of the workforce. Severe arthritis, degenerative disc disease, and chronic back injuries can make sitting, standing, lifting, or carrying painful or impossible for any sustained period. Neurological conditions such as multiple sclerosis and Parkinson’s disease affect coordination, balance, and fine motor control, which matters for any job that demands precision or steady physical effort.
Sensory loss creates a different set of barriers. Vision impairment can rule out driving, machinery operation, and detail work. Hearing loss interferes with communication and safety cues. Heart disease and chronic lung conditions like COPD often cut stamina so far that physically demanding work becomes unsafe, even on a good day.
A short list of severe diagnoses, including certain aggressive cancers, adult brain disorders, and rare childhood conditions, moves through Social Security’s Compassionate Allowances process much faster than a typical claim.1Social Security Administration. Compassionate Allowances
Mental and Cognitive Conditions That Commonly Limit Work
Mental health conditions can be just as disabling as physical ones, though they are harder to document. Severe depression and bipolar disorder often bring crushing fatigue, loss of motivation, and trouble concentrating, which shows up as missed days, declining productivity, and an inability to maintain a consistent schedule. Anxiety disorders can make teamwork, client-facing roles, and high-interaction environments genuinely unbearable rather than merely uncomfortable.
PTSD can make ordinary workplace stressors feel threatening, and hypervigilance and impaired concentration create real problems in high-pressure settings. Cognitive impairments from traumatic brain injury, stroke, or neurodegenerative disease directly affect memory, decision-making, and the ability to learn new tasks. These limitations tend to get worse as job complexity climbs, in ways that aren’t always visible to employers or coworkers.
How Severity and Job Demands Change the Picture
The same diagnosis affects different people’s work capacity in different ways. Severity and trajectory matter most. A stable, well-managed condition is a fundamentally different situation than one that’s progressing or unpredictable. Temporary restrictions after surgery may last weeks; a degenerative neurological condition creates limitations that worsen over time. Social Security’s 12-month duration requirement exists to separate short-term setbacks from lasting disability.
Job demands matter almost as much. A back injury that ends a construction career may barely affect a software developer. Age, education, and transferable skills also change the calculus: someone over 55 with limited education gets significantly more favorable treatment from Social Security than a 35-year-old college graduate with the same medical limitations.2Code of Federal Regulations. Appendix 2 to Subpart P of Part 404 – Medical-Vocational Guidelines
Treatment cuts both ways. Medication, therapy, or surgery that controls symptoms can keep you employed or lift you above the disability threshold. Treatments can also create their own limits through drowsiness, cognitive fog, or physical restrictions during recovery. When you apply for benefits, your functional capacity while on treatment matters as much as the underlying condition.
Staying Employed: Reasonable Accommodations Under the ADA
Before thinking about disability benefits, know that your employer has a legal duty to help you keep working. Under the ADA, you have a disability if you have a physical or mental impairment that substantially limits one or more major life activities, including working, seeing, hearing, walking, standing, lifting, learning, concentrating, thinking, and communicating.3Office of the Law Revision Counsel. 42 USC 12102 – Definition of Disability The ADA looks at functional impact, not diagnosis, so two people with the same condition can end up on different sides of the line.
The ADA makes it illegal for a covered employer to discriminate against a qualified person because of disability, and that ban specifically includes failing to make reasonable accommodations for known limitations.4Office of the Law Revision Counsel. 42 USC 12112 – Discrimination A reasonable accommodation is any change to the job or work environment that lets a qualified employee perform the essential functions of the position. Common examples include modified equipment, restructured duties, part-time or adjusted schedules, reassignment to a vacant position, and physical changes to the workplace.5U.S. Equal Employment Opportunity Commission. The ADA: Your Responsibilities as an Employer Your employer can choose among effective options, and can pick the least expensive one, but cannot simply refuse to accommodate you because it is inconvenient.
Identifying the right accommodation is meant to be a collaborative conversation about your specific limitations, which tasks are affected, and what changes could help. Your employer can ask for medical documentation to understand your restrictions. If an initial accommodation stops working, either side can restart the discussion.6U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Reasonable Accommodation and Undue Hardship under the ADA
The one exception is undue hardship, meaning significant difficulty or expense given the employer’s size and resources. Coworker discomfort or customer prejudice does not count.6U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Reasonable Accommodation and Undue Hardship under the ADA If you truly cannot perform your current job even with accommodations, the employer must consider reassigning you to a vacant position you can handle, though they do not have to create a new position.5U.S. Equal Employment Opportunity Commission. The ADA: Your Responsibilities as an Employer
Taking Time Off: Job-Protected Leave Under the FMLA
If your condition calls for time away rather than workplace changes, the Family and Medical Leave Act may protect your job. Eligible employees can take up to 12 workweeks of unpaid leave in a 12-month period for a serious health condition. You must have worked for the employer at least 12 months, logged at least 1,250 hours in the previous year, and work at a location where the employer has at least 50 employees within 75 miles.7U.S. Department of Labor. Family and Medical Leave Act
FMLA leave does not have to be taken all at once. If your condition requires periodic treatment or causes unpredictable flare-ups, you can take intermittent leave in blocks as short as an hour, or shift to a reduced schedule during recovery, as long as the reduced schedule is medically necessary.8eCFR. 29 CFR 825.202 – Intermittent Leave or Reduced Leave Schedule The leave itself is unpaid, but your employer must maintain your health insurance and restore you to the same or an equivalent position when you return. Some states have their own paid leave programs that add partial wage replacement on top.
When You Cannot Work: SSDI and SSI
Social Security uses a stricter definition of disability than the ADA. To qualify for federal disability benefits, you must be unable to perform any substantial gainful activity because of a condition expected to last at least 12 months or result in death.9Social Security Administration. How Do We Define Disability – The Red Book Substantial gainful activity is measured by earnings: in 2026, non-blind individuals earning more than $1,690 a month are generally considered capable of substantial work, while the threshold for blind individuals is $2,830.10Social Security Administration. What’s New in 2026 – The Red Book These figures adjust annually based on the national average wage index.11Social Security Administration. Substantial Gainful Activity
Two programs sit under that definition. Social Security Disability Insurance is tied to your work history: you qualify if you have worked enough years, paid Social Security taxes, and now have a qualifying disability, and your benefit amount depends on your lifetime earnings.12USAGov. SSDI and SSI Benefits for People with Disabilities SSDI also has a five-month waiting period: benefits do not start until you have been disabled for five full consecutive months.13Code of Federal Regulations. 20 CFR 404.315
Supplemental Security Income does not require a work history. It is a needs-based program for people who have a disability (or are 65 or older) and very limited income and assets. The resource limits are strict: $2,000 for an individual and $3,000 for a couple.14Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet SSI has no waiting period, but benefit amounts are lower and you essentially have to be near poverty to qualify.
If you are already receiving SSDI and want to test whether you can return to work, the trial work period lets you earn any amount for up to nine months within a rolling 60-month window without losing benefits, with any month you earn more than $1,210 in 2026 counting as a trial work month.10Social Security Administration. What’s New in 2026 – The Red Book
How Social Security Decides if You Qualify
SSA runs every claim through a five-step sequence:
- Current work activity. If you are earning above the SGA threshold, you are found not disabled regardless of your medical condition.
- Severity. Your impairment must significantly limit basic work activities and be expected to last at least 12 months.
- Listed impairments. If your condition meets or equals one of the entries in SSA’s Listing of Impairments, you are found disabled without further analysis.
- Past work. SSA assesses your residual functional capacity and asks whether you can still do any work you have done before.
- Other work. If you cannot do past work, SSA weighs your residual capacity along with your age, education, and work experience to decide whether you could adjust to any other work in the national economy.15Code of Federal Regulations. 20 CFR 404.1520
Steps 4 and 5 are where most claims are decided. SSA uses medical-vocational guidelines that combine your physical or mental capacity with your age, education, and prior work skills. Older applicants with limited education and no transferable skills have a much easier path to approval than younger, educated applicants with the same medical limitations.2Code of Federal Regulations. Appendix 2 to Subpart P of Part 404 – Medical-Vocational Guidelines
Applying and Appealing
Prepare for a denial. In fiscal year 2024, only about 16% of initial disability claims were approved. At the hearing level before an administrative law judge, the approval rate rose to roughly 51%.16Social Security Administration. Disability Determinations and Appeals Fiscal Year 2024 Initial denials are common, and appealing is often worth doing.
Strong medical evidence is the foundation of any successful claim. SSA expects documentation from licensed physicians, psychologists, or other qualified providers, including medical history, clinical and lab findings, diagnosis, treatment and response, and a statement about what you can still do despite your impairments.17Social Security Administration. Evidence Requirements That functional opinion is where many claims fall apart. A diagnosis alone does not win a disability case; you need a treating provider who can explain how your condition limits specific work activities like sitting, standing, walking, lifting, concentrating, and following instructions.
The appeals process has four levels, each with a 60-day deadline from the date you receive the denial notice (SSA assumes you receive it five days after the date on the letter):18Social Security Administration. Understanding Supplemental Security Income Appeals Process
- Reconsideration by a different reviewer, who can consider new evidence.
- A hearing before an administrative law judge, where you can testify, bring witnesses, and present additional records. Approval rates climb significantly at this stage.
- Appeals Council review of the ALJ’s decision for legal errors.
- A civil lawsuit in federal court.
If SSA is stopping your benefits because it decided your condition improved, you can keep receiving payments during the appeal by requesting benefit continuation in writing within 10 days of the cessation notice.18Social Security Administration. Understanding Supplemental Security Income Appeals Process Miss that window and payments stop until the appeal is resolved.
Are Disability Benefits Taxed
SSI payments are not taxable. SSDI benefits can be partially taxable depending on your total income. Add half of your annual SSDI benefits to all other income, including tax-exempt interest. If the total exceeds $25,000 for a single filer or $32,000 for a married couple filing jointly, part of your benefits becomes taxable, and up to 50% can be taxed at that lower threshold.19Internal Revenue Service. Publication 915 – Social Security and Equivalent Railroad Retirement Benefits
If your combined income exceeds $34,000 (single) or $44,000 (married filing jointly), up to 85% of your benefits become taxable. If you are married, live with your spouse, and file separately, the base amount drops to zero and up to 85% of your benefits are automatically taxable.19Internal Revenue Service. Publication 915 – Social Security and Equivalent Railroad Retirement Benefits These thresholds are not adjusted for inflation, so more recipients cross them over time.