To what extent do different firms follow different wage policies? How do such policies affect worker mobility between firms, and what are the effects of different wage bargaining regimes? The empirical branch of personnel economics has long been hampered by a lack of representative data sets. Norway is one of a handful of countries that has produced rich linked employer–employee data suitable for such analysis. This paper has three parts. First, we describe the wage setting and employment protection institutions in Norway. Next, we describe the Norwegian data sets. Finally, we document a large number of stylized facts regarding wage structure and labor mobility within and between Norwegian firms. Our main data set covers white-collar worker...