Elias has been a surgeon for over $10$ years. He has individual disability insurance using an "own occupation" definition of disability. He seriously hurts his back while doing sports. As a result of this injury, Elias can no longer work as a surgeon since he cannot stand for long periods of time. He therefore begins to receive disability benefits. One of Elias' former professors suggests that he teach medicine at the university, which his back problem would allow. Elias wonders whether that would be to his advantage since his salary as a professor would be much less than the disability benefits, he currently receives.

If Elias accepts the position, to what disability benefits will he be entitled?

$$ He will be entitled to his full disability benefit in addition to his salary as a professor.

$$ He will be entitled to $50\%$ of his full benefit in addition to his salary as a professor.

$$ He will be entitled to a reduced benefit based on his salary as a professor.

$$ He will not be entitled to any disability benefit.