On the evolution of multiple jobholding in Canada
研究了加拿大自1970年代中期以来多重就业者比例几乎翻三倍的现象，利用面板数据分析其动态变化，发现主要原因是单一就业者更可能从事第二份工作，而主工作更灵活的时间安排也推动了这一趋势。
Abstract In Canada, the fraction of workers holding multiple jobs has almost tripled since the mid‐1970s. In this paper, we document this historical change and provide a comprehensive account of its dynamics. We use restricted‐access panel micro‐data from the Canadian labour force survey to construct transition probabilities in and out of multiple jobholding. We analyze these data through the lens of a trend decomposition that separates out the role of worker inflows and outflows. The upward trend in multiple jobholding is explained chiefly by the increased likelihood of single jobholders to pick up second jobs. While economic reasons remain important, a more flexible hours schedule of the main job adds to the factors that push workers towards multiple jobholding.