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IZA Journal of Labor & Development

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.
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