In the Author's opinion the abandonment of the legal principie according to which the basis of calculation of any wage item is composed by all the remaining wage items («principio dell'omnicomprensivitá») has left room for collective bargáining to regulate the issue, in conformity with our Constitutions (Art. 39, I c.). Collective bargaining can thus freely fix the basis of calculation of what is referred to in the legislation as «wage» or «global net wage»; in this matter, collective bargaining regulation prevails over case-law. Moreover interpretation of collectively established rules on wages has to take place exclusively within the context of collective bargaining.