“If you get hurt or become too sick to work, what happens to your income?” It’s one of the first questions that Scott Dial, a disability-income expert who works with TMA Insurance Trust, asks medical residents and new physicians. For some people — 40 percent, to be exact — that answer is usually “I don’t know” followed by “I think my employer has something,” or “my spouse will have to work.” The average healthy person is rarely counseled on handling a disability.