You may be eligible for an Ordinary Disability Retirement if you are an in-service member or you are on an official leave of absence, and you become physically or mentally incapable of performing your work duties.jh 

In addition, if you are a Tier I, II, IV or VI member, you must have at least 10 years of credited service. If you are a Tier III member, you must have at least 5 years of credited service, must be eligible to receive primary Social Security disability benefits if you are under age 65, and must waive the benefits of any statutory presumption relating to the cause of disability or eligibility for disability benefits.

For more information, please see the Ordinary Disability Retirement and Lump-Sum Disability Benefit brochures.