Social Security Disability Insurance (SSDI) and Supplemental Security Income (SSI) provide income for people who can no longer work because of a disabling condition. That includes depression, bipolar disorder, anxiety disorders, PTSD, and other mental health conditions, as well as physical conditions and combinations of both.
Because Social Security is a federal program, this is work the firm can handle for clients regardless of which state they live in. Most claims are denied at first. The difference between a denial and an approval is often the medical evidence and how the limitations are framed against Social Security's rules.