Relocation lands differently on every family member, and the sharpest pressure usually falls on the accompanying partner. The employed spouse gets structure, colleagues, and purpose from day one; the partner often arrives to an empty flat, no network, and sometimes no work rights. That asymmetry is the most common reason international assignments fail, so check the partner's visa work permissions before accepting anything, and treat their career and social life as a planning priority.
For children, age matters. Younger kids typically adapt fast through school and language immersion, while teenagers can find losing friends genuinely hard, so involve them in decisions and time moves around school transitions. School choice, healthcare registration, and dependent visa conditions all belong on the pre departure checklist.
Also give the family system grace. Roles shift abroad and stress peaks around month three or four. Naming that openly, and building each person their own footholds, keeps the move from straining the relationships it was meant to serve.