VA rates upon physical disabilities and employability.
He is 100% due to employability, around 70% otherwise.
I'm 100% due to physical problems, no employability rating. So, since I haven't actually applied for Social Security benefits, I could take a job if I was able to find one I was capable of doing and it would not affect my VA disability.
The lower part of his left leg, below the knee, was shot off in an accident while in the Army. His right leg was severely injured also but the saved it by fusing the bones in his right ankle. Because he cannot move either ankle, he actually appears to walk fairly normal or at least he did before age/time started causing more problems related to his accident, like the fused bone breaking and not being able to heal because the fusing process killed the bone. After getting out of the army, he drove truck for most of his life. Then the government wanted to regulate overall instead of relying on individual states to regulate trucking and created the national licensing called a CDL to curb abuses. At the time they did it, there was no waiver for artificial limbs. If you had one, you couldn't have a CDL. I don't know if it is still that way or not. But because he was too old, he could not get vocational retraining either, he was too close to retirement age. His job wasn't taken away due to the job market, it was taken away by the government. Luckily, he was able to get an upgrade from the VA due to employability.