During the claim process, the SSA weighs the ability of a disabled individual to perform work-related activities necessary to achieving gainful employment. A Residual Functional Capacity (RFC) form can be valuable to your case. The RFC form allows a treating physician to specifically note the physical performance capabilities of an applicant and if they are unable to perform any substantial work activity. RFCs can be beneficial during both the initial application phase and the appeal hearing level. While RFCs with a check-box format are effective, RFCs with a written narrative are preferred as they provide more in-depth information.