Courts in New York have long required that non-competes and other post-employment restrictive covenants be supported by adequate consideration in order to be enforceable. In a recent article in Hedge Fund Law Report, Jonathan Shepard and Eric Dowell "provide practical advice on how to draft non-compete language that is likely to be held enforceable even where there is no provision for that pay during the subject non-compete period." 

The article can be read in its entirety here, and a link to their previous article explaining how non-reliance clauses are treated by New York courts can be found here.