Perhaps if you've got nice employers who treat employees/contractors well the system you describe would have merits worth discussing. In a world were even successful companies off shore jobs to temporarily push up share prices, were there are attacks on the ability of those who wish to negotiate collectively by private business and by the government (who is suppose to be looking after their interests, ha), were companies who structure themselves to pay virtually no tax in a territory where they operate payroll taxes are one of the things it is hardest to dodge, were insecurity could prevent reporting of harassment etc etc. In utopia maybe, but this is not a utopia.