At some point in your career, you will invariably face a choice of staying with your current employer or taking a job at a new company. The enticement could be better pay, rosier opportunities at the new firm — or to escape a toxic work environment. But is it necessary to change employers to move ahead? And how do the benefits of moving firms compare to upward mobility at your current employer? In their research paper, “Shifts and Ladders: Comparing the Role of Internal
