The visa cleared. The flight was booked. And then everything stopped.
A senior engineer was due at a new site on the first. Immigration had signed off. Payroll had been restructured. An entire project timeline was built around her arrival.
Three days before departure, somebody finally asked the obvious question.
“Where is she actually going to live?”
What followed was four days of:
Here is the part worth sitting with: nobody in that story was bad at their job. Immigration did their job. Payroll did theirs. The failure lived in the space between "approved" and "actually settled."
That gap is what global mobility exists to close.
Global mobility is the function that moves people across borders for work, then keeps them compliant and supported once they get there. A two-week project trip and a five-year posting are the same function at different scales.
Think of it as air traffic control for your workforce. Lots of moving objects, lots of jurisdictions, one team making sure none of them collide.
It rests on four pillars: immigration, tax, payroll, and relocation. Housing sits inside that fourth pillar, and it is the one your employee feels first.
So, is global mobility part of HR? Usually yes, as a specialist function sitting alongside tax, legal, finance, and procurement. Global HR looks after the whole workforce. The global mobility team looks after what happens the moment somebody crosses a border.
Two reasons. The money is enormous, and the failure rate refuses to move.
Expat assignment failure rates have hovered around 40% for four decades. Four decades. Research by International SOS, KPMG and Ipsos puts the cost of one failed assignment at up to $1.25 million.
Read that again. One bad move can cost more than a year of the programme budget.
And the reasons are rarely about competence. Most failures trace back to family adaptation, weak relocation support, and poor communication between stakeholders.
In other words, assignments almost never fail because somebody could not do the job. They fail because the support around the job fell apart.
There is an upside case too. Companies that tie mobility to business strategy see nearly 4x better ROI than the ones treating it as reactive admin. That is the entire argument for running this as a global mobility business function rather than a ticket queue.
Ask what the purpose of global mobility is and you get five answers, not one. These are the five problems that otherwise land on somebody’s desk at midnight.
You are responsible for somebody’s safety in a place they have never lived. That obligation does not pause because a vendor was slow to reply.
A failed assignment typically costs 50% to 200% of the annual package value.
A delayed start date is a delayed revenue date.
Visa expiries. Permit renewals. Tax residency thresholds. Payroll setups that behave differently in every single jurisdiction.
Family issues are now the second most common cause of assignment failure, behind over a quarter of failed moves.
Notice how many of these come back to the same thing. Somebody needs to own the outcome, not just the paperwork.
Now the uncomfortable part. A PwC survey found 60% of organisations still run mobility on spreadsheets and email. Separate research shows nearly 90% of spreadsheets contain at least one mistake.
Put those two numbers side by side and the picture gets clear fast. For most companies, the problems compound:
There is actually a name for all of this. The coordination tax. It never shows up as a line item, which is exactly why it never gets fixed.
A global mobility platform centralises the moving parts of cross-border work. Instead of thirty email threads, one record.
Quick clarification, because the term gets muddled. When people ask what is mobility in software, they sometimes mean device management. Global enterprise mobility software in the HR sense moves people, not laptops. Same words, different discipline.
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That last point is where tools and partners separate. Automation without accountability just makes failure arrive faster.
Take a three-year posting from Bengaluru to Rotterdam, with the company handling the permit, the tax filings, the shipment, and the housing. That is the textbook example of global mobility.
But that is no longer typical. Programmes now include short-term assignments, commuter arrangements, cross-border remote workers, and permanent transfers.
A construction firm rotating 200 workers to a plant site is global mobility. So is a staffing agency running 13-week clinical placements.
Three shifts are already underway.
Agentic AI, not just automation. 2026 marks the shift from AI as a tool to AI agents handling end-to-end logistics and predictive compliance. The nuance matters, though. As one leader put it at Beyond Borders Berlin: "AI is an enabler: it depends on how you use it."
Speed as the metric. Long-term expat moves are declining as companies shift to short-term, project-based deployments, up 25% globally between 2020 and 2023. Programmes built for four moves a year are now handling forty, and most global mobility policy documents have not caught up.
Housing becomes the bottleneck. Talent mobility is no longer limited by policy. It is limited by physical housing availability, which is pushing companies toward real settling-in support.
Which brings us back to the engineer with the visa and no address. The permit was never the hard part.
The future belongs to programmes that treat mobility as a governed function. One system of record. Transparent pricing. Decisions in hours instead of weeks. And a named person who owns the outcome.
Everything else is just a faster spreadsheet.
The purpose of global mobility is to get the right people into the right locations, legally and quickly, with enough support that the assignment succeeds without creating tax, immigration, or duty-of-care exposure.
Usually yes, as a specialist function working alongside tax, legal, finance, and procurement. Global HR manages the whole workforce. The global mobility team manages what happens when someone crosses a border.
A three-year posting from India to the Netherlands is the classic case. So is a 90-day project deployment, a commuter arrangement, or a firm housing 200 workers near a new site.
Mobility in software depends on context. In IT it usually means device and access management. In HR, a global mobility platform manages assignments end to end, covering immigration, tax, payroll, relocation, housing, and reporting.
A global mobility policy is the written rulebook for international assignments. It defines who is eligible, what the company pays for, how housing and allowances are set, and how compliance is handled.
Global mobility services are the specialist offerings behind cross-border moves: immigration and visa support, tax advisory, payroll setup, relocation logistics, temporary accommodation, and settling-in support.