Kernel density estimation of log of real hourly wages (2000 prices), treatment and control groups. Source: Data are from South African Labour Force Surveys (LFS) conducted by Statistics South Africa (September 2000 to September 2007. Notes: The bandwidth used in the Kernel density plots in Stata was reduced from the default bandwidth to 0.02. The vertical line represents log of the first real hourly minimum introduced in the sector (2000 prices). Wages shown are for fulltime workers, that is, those individuals who work at least 27 hours per week. Estimates used are self-reported by workers and are for the weighted sample. Sample includes non self-employed workers aged between 15 and 65 years inclusive. The sample includes non-government employment only. The vertical line indicates the timing of the law in the respective sector. Using the Kolmogorov-Smirnov test, the null hypothesis of the equality of distributions at the 1, 5 or 10 percent level is rejected for each pair-wise comparison of the before and after periods, with the exception of within the Taxi sector. For the control groups, we reject the null hypothesis of the equality of distributions for all groups, with the exception of the control group for the Security sector.