Earnings functions form the basis of numerous labour market analyses. Non-response (particularly among higher earners) may, however, lead to the exclusion of a significant proportion of South Africa's earnings base. Earnings brackets built into surveys intend to maintain response rates....

Infrastructure investment, especially in South Africa, is currently at the forefront of policy and public debate. But the term 'infrastructure' has a variety of definitions and interpretations; the reason for the various definitions is related to infrastructure's various impacts and incidence....