Portfolios of mobility: the movement of expertise in transnational corporations in two sectors — aerospace and extractive industries

This article is about how UK‐based transnational corporations source expertise and move highly skilled people among their sites. TNCs rely heavily on their internal labour markets for skills. We examine patterns and trends in the ways that TNCs in two sectors, aerospace and extractives, dynamically orchestrate and deploy their networks of expertise internationally to address the demands of different markets. We chart the types of mobility that exist, identify how and why they are used, and explore some of the institutional, industrial, organizational and technological factors that influence these trends. We show that different types of mobility play distinct roles in organizations. Companies respond to mobility calls from diverse stimuli by linking together mobility options into portfolios of moves that represent negotiated responses to industrial and individual requirements.