The impact of Sunday shopping on employment and hours of work in the retail industry: evidence from Canada

Between 1980 and 1998 every Canadian province passed legislation that in some way relaxed restrictions on Sunday shopping. This study exploits the variation in deregulation dates between provinces to identify how retail employers adjust employment and hours of work when deciding to open on Sundays. A major complication of this analysis is to first determine for which provinces the deregulation dates are useful indicators of increases in Sunday store openings. This paper uses a unique trading-day regression approach to identify these provinces and then uses aggregate data from the selected provinces to estimate a simple dynamic labour demand model that allows employment and hours to be imperfect substitutes in production. The results suggest that retailers' needs for Sunday labour were disproportionately satisfied through increases in employment levels. Comparison of the estimates at three levels of the retail industry suggests that the employment and hours gains were larger among general merchandise stores than among more specialized retail establishments and relatively modest at the aggregate retail industry level. In addition, despite evidence of an immediate shortfall in the employment level below the long-run optimal level, the results suggest that firms were unable to compensate by temporarily increasing the hours of their existing employees. JEL Classification: J23; L81 Keywords: Employment determination; Demand for labour; Retail and wholesale trade