The decision to pick up and move is a complex one. Migrating involves both direct costs — the move itself — and indirect, opportunity costs, or the foregone benefits of staying put. Moving a household exacerbates this complexity. A new study by Sergi Vidal, Francisco Perales, Philipp M. Lersch and Maria Brandén confirms that this is especially true for dual-earner couples, couples in which both members work outside the home. In principle, this means expanding female labour force participation and shrinking earnings gaps could restrict family moves in the future.