Theoretical and Practical Arguments for Modeling Labor Supply as a Choice among Latent Jobs

Models of labor supply derived from stochastic utility representations and discretized sets of feasible hours of work have gained popularity because they are more practical than the standard approaches based on marginal calculus. In this paper we argue that practicality is not the only feature that can be addressed by means of stochastic choice theory. This theory also offers a powerful framework for developing a more realistic model for labor supply choices, founded on individuals having preferences over jobs and facing restrictions on the choice of jobs and hours of work. We discuss and clarify how this modeling framework deviates from both the conventional discrete approach (Van Soest, 1995), as well as the standard textbook approach based on marginal calculus (Hausman, 1985). It is argued that a model based on job choice opens up for a more realistic representation of the choice environment, and consequently offers the possibility of conducting a richer set of simulations of alternative policies.labor supply, random utility models, tax reform

Collective and Unitary Models: a Clarification

No abstractunitary; collective; intrahousehold allocation; distribution factors; demand

Unexploited Connections Between Intra- and Inter-temporal Allocation

This paper shows that a power utility specification of preferences over total expenditure (ie. CRRA preferences) implies that intratemporal demands are in the PIGL/PIGLOG class. This class generates (at most) rank two demand systems and we can test the validity of power utility on cross-section data. Further, if we maintain the assumption of power utility, and within period preferences are not homothetic, then the intertemporal preference parameter is identified by the curvature of Engel curves. Under the power utility assumption, neither Euler equation estimation nor structural consumption function estimation is necessary to identify the power parameter. In our empirical work, we use demand data to estimate the power utility parameter and to test the assumption of the power utility representation. We .nd estimates of the power parameter larger than obtained from Euler equation estimation, but we reject the power specification of within period utility

Labour supply and taxes

In this paper we provide an overview of the literature relating labour supply to taxes and welfare benefits with a focus on presenting the empirical consensus. We begin with a basic continuous hours model, where individuals have completely free choice over their hours of work. We then consider fixed costs of work, the complications introduced by the benefits system, dynamic aspects of labour supply and we place the analysis in the context of the family. The key conclusion of this work is that in order to estimate the impact of tax reform and be able to generalise results, a structural approach that takes account of many of these issues is desirable. We then discuss the 'new Tax Responsiveness' literature which uses the response of taxable income to the marginal tax rate as a summary statistic of the behavioural response to taxation. Underlying this approach is the unsatisfactory nature of using hours as a proxy for labour effort for those with high levels of autonomy on the job and who already work long hours, such as the self employed or senior executives. After discussing relevant theory we then provide a summary of empirical estimates and the methodology underlying the studies. Our conclusion is that hours of work are relatively inelastic for men, but are a little more responsive for married women and lone mothers. On the other hand, participation is quite sensitive to taxation and benefits for women. Within this paper we present new estimates form a discrete participation model for both married and single men based on the numerous reforms over the past two decades in the UK. We find that the participation of low education men is somewhat more responsive to incentives than previously thought. For men with high levels of education, participation is virtually unresponsive; here the literature on taxable income suggests that there may be significant welfare costs of taxation, although much of this seems to be a result of shifting income and consumption to non-taxable forms as opposed to actual reductions in work effort

Collective Household Models: Principles and Main Results.

In the traditional approach to consumer behaviour it is assumed that households behave as if they were single decision making units. This approach has methodological, empirical and welfare economic deficiencies. A valuable alternative to the traditional model is the collective approach to household behaviour. The collective approach explicitly takes account of the fact that many person households consist of several members which may have different preferences. Among these household members, an intrahousehold bargaining process is assumed to take place. Next to providing an introduction to the collective approach, this survey intends to show how different collective household models, each with their own aims and assumptions, are connected.collective household models, household bargaining, intrahousehold allocation, consumption behaviour, labour supply.

Is the elasticity of intertemporal substitution constant?

This paper shows that a power utility specification of preferences over total expenditure (ie. CRRA preferences) implies that intratemporal demands are in the PIGL/PIGLOG class. This class generates (at most) rank two demand systems and we can test the validity of power utility on cross-section data. Further, if we maintain the assumption of power utility, and within period preferences are not homothetic, then the intertemporal preference parameter is identified by the curvature of Engel curves. Under the power utility assumption, neither Euler equation estimation nor structural consumption function estimation is necessary to identify the power parameter. In our empirical work, we use demand data to estimate the power utility parameter and to test the assumption of the power utility representation. We find estimates of the power parameter larger than obtained from Euler equation estimation, but we reject the power specification of within period utility.Elasticity of intertemporal substitution, Euler equation estimation, demand systems