- Disability Report Appeal (SSA-3441) [PDF File]
 - Disability Report - Adult (SSA-3368) [PDF File]
 - Appointment of Representative (SSA-1696)  [PDF File]
 - Authorization to Disclose Information to SSA (SSA-827) [PDF File]
 -         Request for Reconsideration (SSA-561-U) [PDF File]
 - Request for Hearing by Administrative Law Judge (HA-501) [PDF File]
 - Claimant's Recent Medical Treatment (HA-4631) [PDF File]
 - Claimant's Medications (HA-4632) [PDF File]
 - Claimant's Work Background (HA-4633) [PDF File]
 - Adult Function Report (SSA-3373) [PDF File] 
 - Adult Third Party Function Report (SSA-3380) [PDF File] 
 - Work History Report (SSA-3369)  [PDF File] 
 
These are forms commonly used when applying for both Social Security Disability Benefits and Supplemental Security Income.
If you are applying for SSD or SSI, I recommend contacting an experienced Social Security Disability Attorney.
If you retain a lawyer to assist you with your Social Security Disability application, make sure that the attorney assists you in completing these forms.