In light of section 198(b) of the Labour Relations Act, Act 55 of 1995, which provides for the deeming provision and that employees must be provided with equal access to opportunities, what preventive measures has his department taken against whiteowned companies who extend fixed-term contracts for a period as long as 20 years, thereby avoiding the deeming provision and circumventing the national minimum wage legislation and making sure that the bargaining power remains in their hands?