Entitlement to total disability based on individual unemployability (TDIU) is granted from September 1, 2008, to May 20, 2015.

Board reasoning

The Board finds that the Veteran's service-connected disabilities rendered him unable to secure or follow substantially gainful employment from September 1, 2008, through May 20, 2015. The Board weighs the Veteran's hearing testimony, medical examinations, and work history, noting that prolonged sitting and physical limitations from knee/hip problems and comorbidities severely restricted employability, including sedentary desk work, while still allowing for education achievements that do not negate the overall impairment. The evidence is at least in approximate balance in showing unemployability during the period on appeal, and thus the benefit is granted under 38 C.F.R. § 4.16(a) with consideration of Rice v. Shinseki and related case law in determining entitlement and period.”