@TechReport{iza:izadps:dp6652,
            	author={Andrews, Martyn J. and Gerner, Hans-Dieter and Schank, Thorsten and Upward, Richard},
            	title={More Hours, More Jobs? The Employment Effects of Longer Working Hours},
            	year={2012},
	month={Jun},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={6652},
            	url={https://www.iza.org/index.php/publications/dp6652},
	abstract={Increases in standard hours have been a contentious policy issue in Germany. Whilst this might directly lead to a substitution of workers by hours, there may also be a positive employment effect due to reduced costs. Moreover, the response of firms differs between firms which offer overtime and those which do not. For a panel of German plants (2001-2006), we analyse the effect of increased standard hours on employment. Using difference-in-difference methods we find that, consistent with theory, overtime plants showed a significant positive employment response, whilst for standard-time plants there is no difference at all between plants which increased standard hours and those which did not.},
	keywords={plant-level data;employment;working time;difference-in-differences},
            }