Labour market data
The census produces lower estimates of labour force participation than September 2001 Labour Force Survey. There is possible under-reporting of employment in the informal and subsistence agriculture sectors, particularly among those working only a few hours per week. The labour force survey questionnaire includes more prompts to clarify these issues, which is not possible during census enumeration. The United Nations and the International Labour Organisation note that labour force surveys are expected to produce more reliable estimates of labour market variables than censuses. Note that the labour force survey figures of September 2001 are the official labour market statistics for the period.