The Problem with the Phrase, "Covenant of Works"

"The disadvantage of the phrase 'covenant of works' is that it has led to a controversy over the nature of the covenant agreement between God and Adam.  Two problems especially have entered the discussion:  (1) The terminology is reminiscent of a commercial exchange.  This suggests that eternal life is a kind of commodity... (2)  The works are Adam's works, not God's so one gets the impression that Adam is left entirely on his own.  These two contentions are used to maintain a clear contrast between works and grace." - Frame, ST, p65