If you are the head employment lawyer for EMEA and are promoted to global employment lawyer, certainly your scale of responsibility expands. You have more people reporting to you, a larger budget, more locations to visit, additional laws and regulations to consider, but you are essentially doing the same things in the same area of law although writ larger. Demands are more, but of a like kind.
By contrast, if you are the top corporate litigator and are selected to become the general counsel, your scale certainly enlarges, but far more significantly your scope grows dramatically. Your job involves new activities of qualitatively larger breadth and complexity, such as shareholder meetings, boards of directors, corporate governance concerns, public relations, and being the icon of the legal function.