How to Fill Out the Work Activity Report (SSA-821)

If the Social Security Administration mailed you Form SSA-821-BK, you have 15 days to fill it out and return it. Here is how to fill out Form SSA-821 accurately: gather your pay stubs and employer details, answer each numbered question about the work you have done since your disability began, disclose any special help you receive on the job and any disability-related costs you pay out of pocket, and send the completed form back to the office listed at the top.1Social Security Administration. SSA-821-BK – Work Activity Report – Employee The form goes to disability beneficiaries who work as employees, and your answers determine whether your earnings cross the Substantial Gainful Activity threshold — $1,690 per month for non-blind individuals or $2,830 per month for blind individuals in 2026.2Social Security Administration. Substantial Gainful Activity

Gather These Documents First

Do not open the form until you have your records in front of you. The SSA cross-references what you report with data from the IRS and employers, so accuracy matters more than speed. Pull together:

  • Every pay stub from the period the SSA is reviewing. The form asks for gross earnings, not take-home pay.1Social Security Administration. SSA-821-BK – Work Activity Report – Employee
  • The company name, mailing address, direct supervisor’s name, and phone number for each employer.
  • The exact start and end dates (month, day, year) for each job, and the reason work ended if it did.
  • Receipts for any transportation, medical devices, attendant care, or other costs you pay out of pocket because of your disability.

If you cannot find pay stubs, ask your employer’s payroll department for a year-to-date earnings summary. That substitute is acceptable for the financial figures the form requires.

Working Through the Questions

The SSA-821-BK is organized into numbered questions (1, 2, 3A through 3C, 4, 5A, and 5B), and the path you follow depends on how you answer the first one.3Social Security Administration. DI 10505.035 – Documenting Employment Cases Using Forms SSA-821-BK and SSA-823

Question 1: Did You Work?

Question 1 asks whether you have had any employment income or wages since your disability began, since the date shown at the top of the form, or since the SSA last reviewed your work. Answer “yes,” and you skip ahead to Question 3A. Answer “no,” and you move to Question 2, which the SSA uses when its records show income you have not reported.

Question 2: Income Without Active Work

This question captures money the SSA sees in its records that did not come from active work — back pay from a prior job, vacation pay, sick pay, disability insurance payments, or workers’ compensation. Check every category that applies, list the employer name, amount, and dates paid, then sign the form and return it.1Social Security Administration. SSA-821-BK – Work Activity Report – Employee

Questions 3A Through 3C: Employer and Earnings Details

This is the heart of the form. Starting with your most recent employer, fill in the company name, your supervisor’s name, phone and fax numbers, mailing address, job title, rate of pay, and average hours worked per pay period. Enter the exact start date, whether you are still working, and the date and reason work ended if it did. The form provides space for up to three employers across 3A, 3B, and 3C, with additional pages available if you held more jobs during the review period.

Report gross earnings, meaning the amount before taxes and other deductions. The SSA evaluates your total income before federal insurance contributions or income tax withholdings come out. If you have already sent pay stubs online, by mail, or in person, check the box at the bottom of each employer entry to confirm that.

Question 4: Income Beyond Your Regular Paycheck

Question 4 asks whether you received any additional income from those same employers on top of your regular paycheck: sick pay, vacation pay, bonuses, tips, workers’ compensation, or disability insurance payments. The SSA separates these from regular earnings because only income tied to actual work counts toward the SGA determination. Report a holiday bonus or a cashed-out vacation payout here so the agency can subtract it before evaluating your work.

Question 5: Special Help and Job Description

Question 5A asks whether you receive extra help on the job because of your disability, such as additional supervision, simpler tasks, a job coach, or longer breaks than other workers in the same role. This is one of the more consequential questions on the form. The SSA only counts the real value of the work you personally perform when deciding whether you have reached SGA. If you earn $17 an hour but a coworker or job coach handles part of your workload, the agency may determine your labor is worth less than what you are paid and reduce your countable income accordingly.4Social Security Administration. SSDI and SSI Employment Supports

Question 5B asks you to describe what you actually do at work. Be specific. List your duties, the tools or equipment you use, and how your role compares to a typical position in that field. If you work fewer hours, handle lighter responsibilities, or take more breaks than someone without a disability would in the same job, say so clearly. This narrative gives the reviewer context that raw earnings numbers cannot provide.

Impairment-Related Work Expenses

Impairment-Related Work Expenses are out-of-pocket costs you pay for items or services you need in order to work because of your disability. The SSA subtracts these expenses from your countable earnings before making an SGA determination, which can keep your income under the threshold even when your gross pay is above it.5Social Security Administration. Spotlight on Impairment-Related Work Expenses

Common examples include:

  • Specialized transportation. If your disability prevents you from taking public transit and you pay for a car service or modified vehicle to get to work, the cost above what a typical commuter would pay can be deducted.
  • Attendant care. Services someone provides to help you prepare for work, assist you while you are at work, or get you home afterward.
  • Medical devices and supplies. Prostheses, wheelchairs, medications, bandages, or other items your disability requires that you pay for yourself.

The expense must be related to your disability, necessary for you to work, and not reimbursed by insurance or another source. Include receipts or detailed descriptions with your form so the SSA can apply the deductions correctly.

How to Submit the Form

You have several ways to return the completed form:

  • Mail it to the Social Security field office handling your case. Certified mail gives you a tracking number and proof of delivery if a dispute later arises about whether you met the deadline.
  • Deliver it in person to your local field office or use the office’s drop box.6Social Security Administration. Upload Documents
  • Fax it to the number listed on the form or provided by your local office.
  • Upload it through the SSA’s online document portal, which also accepts supporting pay stubs.

If 15 days is not enough time, call the office listed on the form or the SSA’s main line at 1-800-772-1213 (weekdays, 8 a.m. to 7 p.m.) to explain your situation and request an extension.

If You Miss the Deadline

Ignoring the form has real consequences. If the SSA does not receive it, the agency may contact your employer directly or make a decision based on whatever information is already in your file, which can work against you if the records are incomplete or show higher earnings than what you would have reported after deductions for subsidies or work expenses. Failing to cooperate with a request for information during a continuing disability review lets the SSA suspend your benefits starting the month it determines you should have responded.7Social Security Administration. 20 CFR 404.1596 – Circumstances Under Which We May Suspend and Terminate Your Benefits Before We Make a Determination If you then provide the missing information, the agency reinstates benefits for any months they were otherwise payable. If 12 consecutive months pass without a response, the SSA terminates benefits entirely, effective the 13th month after the suspension began.

Federal regulations also require you to report work changes on your own, without waiting for a form. SSDI recipients must promptly report a return to work, a new job, a change in hours, or a change in earnings.8eCFR. 20 CFR 404.1588 – Your Responsibility to Tell Us of Events That May Change Your Disability Status SSI recipients have the same obligation.9eCFR. 20 CFR 416.988 – Your Responsibility to Tell Us of Events That May Change Your Disability or Blindness Status Deliberately providing false information on the form carries civil monetary penalties that currently exceed $10,000 per false statement after inflation adjustments.10eCFR. 20 CFR Part 498 – Civil Monetary Penalties, Assessments and Recommended Exclusions If your answers lead to an overpayment, the SSA can withhold up to 50 percent of your monthly benefit until the debt is repaid.11Social Security Administration. Resolve an Overpayment

If You Are Self-Employed, You Have the Wrong Form

The SSA-821-BK is only for employees. Self-employed beneficiaries complete the SSA-820-BK instead, which asks about business structure, net earnings, and unpaid help you receive.12Social Security Administration. SSA-820-BK – Work Activity Report – Self-Employment If the SSA sent you the employee version but you are self-employed, contact the office listed on the form right away rather than trying to make the wrong form fit your situation.