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Title:Improving the modeling of couples' labour supply PDF Logo
Authors:Breunig, Robert
Cobb-Clark, Deborah A.
Gong, Xiaodong
Issue Date:2005
Series/Report no.:IZA Discussion Papers 1773
Abstract:We study the work hours of Australian couples, using a neoclassical labour-supply model in which couples choose from a small, realistic set of possible wife-husband working hour combinations We introduce three improvements to this standard model. First, we allow partners' preferences about non-market time to be correlated. We also correct the estimates to account for the fact that we estimate the non-observable wage rates of individuals who do not work. Lastly, we allow each individual's preferences for non-market time to be correlated with her or his wage rate. These changes, which substantially enhance the realism of the standard, discretized labour-supply model, also have an important impact on the results. We estimate the model using HILDA data and find wage elasticities of labour supply 0.26 for men and 0.50 for women that are twice as large as those found without these three innovations. Using simulation methods, we then analyze the expected impact of the 2005/06 Australian tax reform. As a result of the tax cuts, we expect working hours to increase by 1.7 per cent for both men and women and household after-tax incomes to increase by approximately $60 per week on average. For families with two wage earners, each earning between $25,000 and $55,000 per year, our model predicts an after-tax increase in income of $38 after accounting for these labour supply effects much larger than the Australian Government's own prediction of $12, which does not allow for labour supply effects.
Subjects:family labour supply
Australia
simulated maximum likelihood
discretized structural model
JEL:C51
D10
J22
Document Type:Working Paper
Appears in Collections:IZA Discussion Papers, Forschungsinstitut zur Zukunft der Arbeit (IZA)

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