Not the time for disability check

A friend's husband was involved in an accident and injured too much of his knee. It's been years and til now, he's still in prescription medicine. Once he told her wife (my friend, a Filipina too) that he wants to quit working and would just file for disability support or apply for SSDI and would just reside in the Philippines where his check would be a lot more in value. The wife, of course, stopped him from doing so because he ain't that disabled. In fact he still can walk and do a lot of stuff. It's just the right knee that hurts often. The husband listened to his wife and now he is in a nursing school and at the same time works overnight with us.