In recent years two views have developed as to the efficacy of prohibitions on the assignment of contractual rights. One view, “the property view”, dictates that such prohibitions characterise contractual rights as choses in action and robs them of their transferable nature. Another view, “the contract view”, dictates that such prohibitions operate only at the level of contract and cannot prevent the equitable assignment of the benefit of a contract. Both views have judicial and academic support. The view that is ultimately adopted will have important implications for contract drafting and the law of assignment. This paper explains both views and puts forward an argument for adopting the property view.