If these people win their cases, they can qualify for monthly disability payments as well as back pay. The best way to win a disability case is to hire a qualified Tacoma, WA, law firm that specializes in Social Security disability cases. Here’s why. A reputable Social Security law firm in Tacoma, WA, will assist clients on up to their hearings. During these hearings, the lawyer will cite various clients’ medical records to prove they have genuine disabilities.