Are Working Hours Complements in Production? Staff Working Paper 2022-47 Lin Shao, Faisal Sohail, Emircan Yurdagul Using Canadian matched employer-employee data, we show that working hours of different workers are gross complements in production rather than perfect substitutes, as is typically assumed by macroeconomic models of production. Content Type(s): Staff research, Staff working papers Topic(s): Economic models, Labour markets JEL Code(s): E, E2, E23, J, J2, J22, J23, J3, J31