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Table 3 Mean characteristics of employed sample (2000 to 2007), treatment and control groups

From: The impact of sectoral minimum wage laws on employment, wages, and hours of work in South Africa

  2000 2001 2002 2003 2004 2005 2006 2007 Mean Pre-law Mean Post-law Pre-post difference
Retail Fulltime 0.92 0.94 0.95* 0.94* 0.96* 0.96* 0.96* 0.96* 0.94 0.96 0.02*
Hours per Week 47.3 48.5 48.5 47.7 47.5 48.5 46.8 46.3 48.3 47.3 −1.0*
Nominal Hourly Wage 10.8 10.4 11.1 12.6 13.9* 14.0* 15.1* 15.6* 10.8 14.3 3.5*
Real hourly wage 10.7 9.9 9.6 10.0 10.9 10.7 11.0 10.6 9.9 10.7 0.8*
Control Fulltime 0.92 0.95* 0.94* 0.96* 0.97* 0.96* 0.96* 0.97* 0.94 0.97 0.03*
Hours per Week 45.5 46.3 45.9 45.7 45.9 47.5* 46.3 46.1 46.0 46.3 0.3
Nominal Hourly Wage 9.5 9.8 10.6* 12.0* 12.4* 12.0* 13.1* 14.4* 10.0 12.8 2.8*
Real hourly wage 9.3 9.3 9.1 9.6 9.7 9.2 9.6 9.8 9.2 9.6 0.4
Domestic work Fulltime 0.81 0.84 0.83 0.82 0.82 0.79 0.79 0.81 0.83 0.81 −0.02*
Hours per Week 41.3 42.3 42.5 40.8 40.4 41.8 39.1 39.2 42.2 40.4 −1.8*
Nominal Hourly Wage 2.8 2.9 2.7 3.3* 4.0* 4.0* 4.8* 5.5* 2.8 4.2 1.4*
Real hourly wage 2.7 2.7 2.3 2.6 3.1* 3.1* 3.5* 3.7* 2.7 3.1 0.4
Control Fulltime 0.87 0.95* 0.93 0.87 0.93 0.88 0.92 0.89 0.92 0.90 −0.02
Hours per Week 42.56 46.87 46.70 42.96 45.68 44.51 45.25 43.88 45.3 44.7 −0.6
Nominal Hourly Wage 4.69 5.04 5.29 5.20 5.37 5.98* 6.70* 7.40* 5.0 6.1 1.1*
Real hourly wage 4.61 4.79 4.53 4.13 4.21 4.58 4.90 5.03 4.7 4.6 −0.1
Forestry Fulltime 0.98 0.97 1.00 0.98 0.99 1.00 0.99 0.99 0.99 0.99 0
Hours per Week 50.0 50.9 51.6 50.8 49.5 50.9 49.0 49.6 50.7 49.0 −1.7
Nominal Hourly Wage 2.9 2.9 2.8 3.4 3.3 5.0* 4.8* 4.7* 3.5 4.5 1.0*
Real hourly wage 2.8 2.8 2.4 2.7 2.6 3.8 3.6 3.2 2.9 3.1 0.2
Control Fulltime 0.91 0.95* 0.94 0.89 0.91 0.88 0.89 0.91 0.90 0.91 0.01
Hours per Week 45.5 47.3 47.0 44.0 44.6 44.5 43.7 43.7 44.9 43.9 −1.0*
Nominal Hourly Wage 5.5 5.6 5.9 5.5 5.8 6.3 7.5* 7.9* 6.0 7.9 1.9*
Real hourly wage 5.5 5.3 5.1 4.4 4.6 4.9 5.5 5.4 4.9 5.5 0.6*
Security Fulltime 0.96 0.98 0.99* 1.00* 0.99 0.98 0.99* 0.99 0.98 0.99 0.01
Hours per Week 60.2 58.5 59.4 55.3 55.0 57.6 57.3 57.5 59.0 57.0 −2.0*
Nominal Hourly Wage 6.4 6.8 7.0 7.9* 7.9* 8.2* 8.7* 9.4* 6.7 8.3 1.6*
Real hourly wage 6.3 6.4 6.0 6.3 6.2 6.3 6.3 6.4 6.4 6.3 −0.1
Control Fulltime 0.96 0.98 0.98 0.99 0.98 0.98 1.00 0.99 0.97 0.99 0.02
Hours per Week 48.5 48.2 47.2 46.9 46.7 47.8 46.5 49.2 48.3 47.4 −0.9
Nominal Hourly Wage 9.3 8.3 11.5 9.8 10.9 11.5 12.2* 12.0* 8.6 11.3 2.7*
Real hourly wage 9.1 7.9 9.9 7.8 8.5 8.8 8.9 8.2 8.3 8.7 0.4
Taxi Fulltime 0.96 0.97 0.97 0.99* 0.95 0.98 0.96 1.00* 0.97 0.98 0.01
Hours per Week 68.4 67.4 66.3 67.0 63.1 68.6 66.9 67.4 66.6 67.0 0.4
Nominal Hourly Wage 4.8 4.4 4.4 4.7 5.5 4.7 5.3 5.0 4.7 5.1 0.4
Real hourly wage 4.7 4.2 3.8 3.7* 4.3 3.6* 3.9 3.5* 4.0 3.7 −0.3
Control Fulltime 0.96 0.98 0.98 0.99* 0.98 0.98 1.00 0.99* 0.98 0.99 0.01
Hours per Week 48.5 48.2 47.2 46.9 46.7 47.8 46.5 49.2 47.3 48.1 0.8
Nominal Hourly Wage 9.3 8.3 11.5 9.8 10.9 11.5 12.2* 12.0* 10.2 12.0 1.8*
Real hourly wage 9.1 7.9 9.9 7.8 8.5 8.8 8.9 8.2 8.6 8.6 0
  1. Source: Data are from South African Labour Force Surveys (LFS) conducted by Statistics South Africa (September 2000 to 2007). Both September and March waves of the survey are represented in the table.
  2. Notes: The last column shows the difference in means between the pre and the post-law periods respectively. An asterisk indicates a significant difference with base year (2000) at 5 percent or a significant difference in means between the pre-law and post-law period respectively. All statistics are self-reported by workers and statistics are weighted. Sample includes non self-employed workers aged between 15 and 65 years inclusive. The wage variables are means for full-time workers. A fulltime worker is someone who reported at least 27 hours of work per week. The sample of covered workers includes non-government employment only. The red line indicates the timing of the introduction of the law in the respective sector.