Sectoral minimum wages in South Africa: disemployment by firm size and trade exposure

Marlies Piek () and Dieter von Fintel
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Marlies Piek: Department of Economics, Stellenbosch University

No 19/2018, Working Papers from Stellenbosch University, Department of Economics

Abstract: This paper measures the impact of South African minimum wages on small and large firm employment in a sector that is exposed to international competition (agriculture) and one that is not (retail). Our results highlight that small firms in a tradable sector are the most vulnerable to minimum wage legislation. In particular, small farms shed jobs, while larger farms employed more unskilled workers as a result of minimum wages. Small firms were more affected by the minimum wage as they employed a higher proportion of low-skilled, low-wage workers. In contrast, large farms employed a lower proportion of low-skilled workers and used a more capital-intensive production process and were thus less affected by the legislation. While this shift represents a short-run response to minimum wages, it intensifies a long-run movement towards fewer, larger, more capital-intensive farms. Retail firms, on the other hand, do not exhibit the same behaviour, with zero employment losses in both small and large firms. This difference in result can be explained by the fact that firms that face international competition cannot easily increase prices when faced with wage increases. Non-tradable sectors, such as retail, can increase prices and shift the burden of higher labour costs onto the consumer as they do not face international competition. The effects of minimum wages in South Africa is, therefore, more complex than what previous research shows. We argue that an undifferentiated national minimum wage can result in intra-industry concentration and inequality could grow. This is true even if the economy-wide impact of a national minimum wage could be potentially benign.

Keywords: Minimum wages; employment effects; firm size; international trade; concentration (search for similar items in EconPapers)
JEL-codes: F16 J43 J81 K31 L11 (search for similar items in EconPapers)
Date: 2018
New Economics Papers: this item is included in nep-int and nep-lma
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