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Impairment Income Benefits (IIBs)

You may be entitled to Impairment Income Benefits (IIBs) if you have a permanent impairment from a work-related injury or illness.

IIBs are determined by your Impairment Rating (IR). An IR describes the degree of permanent damage to your body as a whole. A doctor or other health care provider will assign an IR. This generally happens when an injured employee reaches Maximum Medical Improvement (MMI), which is when the employee is as well as he or she is going to be after treatment.

To determine IR, a doctor will use the 4th Edition of the American Medical Association (AMA) Guides to the Evaluation of Permanent Impairment.

Your IR determines if you are eligible for IIBs. If you are eligible, you get three weeks of IIBs for each percentage of impairment.


if you receive a 10% IR, you will receive 30 weeks of IIBs. That's because three weeks of IIBs are paid for each percentage of impairment (10 x 3 = 30).

To find out how many weeks you would receive, call 800-252-7031 Ext. 1.

If a doctor says you have not reached MMI, you are considered to have reached MMI 104 weeks after the date your income benefits began to accrue.

A doctor certified by TDI-DWC to perform IR examinations must determine if your work-related injury or illness has been resolved. If you don't get an IR before 104 weeks, you may not receive IIBs until a doctor assigns an IR. You typically can't get Temporary Income Benefits after 104 weeks (or statutory MMI).

TDI-DWC may order an extension if you have, or have been approved to have, spinal surgery within 12 weeks before you reach 104 weeks.

Amount of Impairment Income Benefits

  • IIBs are 70% of average weekly wage (AWW).
  • If your AWW is higher than the state average weekly wage of $773, you will get $541 per week--the most allowed by law.

To find out how much you would receive, call 800-252-7031 Ext. 1.

When Impairment Benefits Begin and End

You are eligible for IIBs the day after you reach MMI. IIBs end after you get three weeks of payments for each percentage of your IR.

To find out how many you would receive, call 800-252-7031 Ext. 1.

For more information:

Texas Labor Code (TLC) §§ 408 .121 - 408.129
28 Texas Administrative Code (TAC) §§ 130.1 - 130.12

Last updated: 5/23/2018