First published in 1981. This book reports on a decade of research into the effects of taxation on the supply of labour. In addition to their work in making labour supply estimates, the study explores a number of the ways labour supply estimates can be used. When budget constraints are non-linear it is not possible to estimate the effects of (tax) or other policy changes from knowledge of labour supply elasticities alone, and it is necessary to re-estimate the original model used to derive the estimates. The implications of labour supply estimates for the study of inequality and optimal taxation are considered. Macro-economic models of the economy typically omit labour supply functions or include functions which are inconsistent with micro-economic work on labour supply. This book will appeal to academic economists, senior students and policy-makers in the field of public finance and labour economics, who will find much of interest from both the theoretical and policy standpoints.