Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/77935
Authors: 
Martini, Jan Thomas
Niemann, Rainer
Year of Publication: 
2013
Series/Report no.: 
Arqus-Diskussionsbeiträge zur quantitativen Steuerlehre 145
Abstract: 
In many industries like management consulting, IT consulting, or construction highly qualified employees, i.e., experts or executive managers, have to be assigned to temporary projects. In firms with many employees and various different projects, this assignment decision involves a complex optimization procedure. Obviously, the employees' productivities in the respective projects are crucial for the employer's optimal assignment decision, but assignment can also be affected by risk-incentive trade-offs. Moreover, taxation can alter the assignment decision, especially if employees are sent abroad as expatriates so that international tax law has to be taken into account. To address these issues simultaneously, we combine a human resource assignment problem with a principal-agent problem of the LEN type. Both wage taxation at the agents' level and corporate taxation at the principal's level are integrated. We show that national tax rules aswell as the methods for avoiding double taxation and the agents' tax characteristics are important determinants for international assignment decisions. The effects of tax rate variations can be ambiguous and depend on whether the exemption method or the credit method are applied, in particular if agents make differing choices of residence. From a tax policy perspective, the exemption method should be preferred because the tax effects are more transparent than under the credit method. Special deductions for incoming expatriates have only little effects on the optimal assignment decision.
Subjects: 
Assignment
Expatriates
International taxation
Principal-agent model
LEN model
JEL: 
H24
H25
M41
Document Type: 
Working Paper

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