In an ideal world, any modification of a contract would be in writing, signed by the parties, notarized and witnessed by an independent third party. In the real world, not only are contracts modified, or terms waived, without all of those formalities; but it is not at all unusual for business people to modify agreements orally with little more than a handshake.  Nevertheless, the enforceability of a specific oral modification or waiver can be as unpredictable as the New England weather.… Keep reading