The emergence of online labor markets calls the validity of traditional career models into question. Given the volatility and digital nature of this environment, short-term employment relationships and heterogeneity of workers, employers and tasks in these markets, it is unclear how careers...

We study career and wage dynamics within and between firms using a large linked employer-employee panel dataset spanning 26 years. We construct six-level hierarchies for more than 5,000 firms. We replicate most of the analyses from Baker, Gibbs and Holmström (Quarterly Journal of Economics,...