In order to gain approval for total disability individual unemployability (TDIU) benefits claims, a veteran is required to demonstrate that they are unable to secure or follow a substantially gainful occupation as a result of their service-connected disabilities. Veterans may not work full-time while earning TDIU benefits. Veterans who obtain individual unemployability are only allowed to work if they meet the strict guidelines for marginal employment, protected work environments, or sheltered work environments.
Read more about marginal employment and protected or sheltered work environments: