Labour-Supply Behaviour
In the preceding chapters, the focus was on simulating policies that aim to reduce poverty, generate revenue, or redistribute resources. However, many public policies also try to incentivize behaviour, such as those to improve labour participation or supply, or to change behaviours in relation to savings or pollution. Social- and fiscal-policy instruments face a fundamental trade-off. An instrument that performs well from an income-maintenance perspective may have unintended behavioural consequences. This chapter considers the structure of instruments that have an explicit goal to improve behavioural response, particularly focusing on in-work benefits. The chapter also describes how to use a microsimulation mode to simulate the inputs required for the estimation of a behavioural-econometric model, and then estimates a revealed-preference-choice model. The chapter then describes a method often used in microsimulation models to calibrate choice models for simulation purposes. In terms of measurement issues related to the behavioural analysis, we describe the design and use of replacement rates. The chapter concludes by undertaking a simulation of the introduction of a change in in-work benefits.