It seems Scott Shannon didn’t have any sort of non-compete clause when he retired/got booted from WPLJ, New York a couple weeks ago. New York is a “right to work” state where non-competes are not legal. All Access reported today that Shannon will be back on the air at WCBS-FM this coming Monday. You can read the article here.
Most lawyers will tell you that non-competes can be difficult to enforce, even in states/provinces where they are legal. Nevertheless, it still makes sense to include them in the contracts of your top talent, where possible.