France to Norway looks like the easy corridor. Both are in the EEA, so there is no work permit to apply for and the employee can start work the day they land. Most guidance stops there.
That is why this corridor surprises people. The things that go wrong are not immigration — they are payroll and identity, they are triggered by dates rather than by an application, and nobody sends you a reminder. The most common outcome is a first salary paid with 50% tax withheld, which is a bad way for an employee to start a new job.
Everything below is sourced from Norwegian and French government pages, checked in July 2026, with the exact wording quoted so you can verify it yourself.
The public, AI-indexable corridor page — requirements as a list, plus what ReloPass is, price honesty, and alternatives — lives at /corridors/france-to-norway/.
| What | When it bites | Who owns it |
|---|---|---|
| Tax deduction card (skattekort) | Before the first payroll run | Employer retrieves it |
| D-number | Needed to get the tax card, for stays under 6 months | Employee, in person |
| Police registration | Within 3 months of arrival, if staying over 3 months | Employee, in person |
| A1 vs Norwegian social security | From day one of work | Depends on posted vs locally hired |
| National identity number | Stays of 6 months or more | Employee |
The first two are the ones that cost money. The rest are the ones that cost time.
If there is no tax deduction card on file when payroll runs, the employer must withhold at 50%. Skatteetaten states it plainly:
"Without a tax deduction card, the employer must deduct 50 percent tax."
Two details HR teams get wrong:
It is the employer's job, not the employee's. The employer retrieves the card and applies the deduction. An employee who has "sorted their tax" has not necessarily produced a card your payroll system can see.
It is a date, not a task. The deadline is your own payroll cut-off. It does not arrive in an inbox, and no authority tells you it is coming. This is the single most common failure on this corridor, and it is entirely preventable by working backwards from the first pay run.
For a stay under six months, the employee does not get a Norwegian national identity number. They get a D-number — a temporary identification number:
"A D number is a temporary identification number that you receive from the Norwegian Tax Administration when you … do not meet the criteria to being assigned a national identity number."
The D-number is issued by Skatteetaten as part of the tax card process, and it gates the tax card:
"The tax deduction card will not be issued until the worker has been to an ID check."
That ID check typically requires an in-person appointment. A few narrow exemptions exist — workers only on the continental shelf, and seafarers on Norwegian-registered ships.
So the real chain is: in-person appointment → D-number → tax card → payroll at the correct rate. If you plan only the last step, the first three will not have happened.
EU/EEA nationals may move and start work immediately, but registration is required for longer stays:
"EU/EEA nationals can move to Norway and start working right away, but they must register with the police no later than three months after arriving."
Registration is free, and applies to stays over three months. The employee must bring an employment contract or an employment certificate:
"you must provide your worker with an employment certificate … or an employment contract with the same information … The employee must present the certificate or contract to the police when registering."
The catch is not the rule, it is the calendar. Registration needs an in-person police appointment, and appointment availability at busy offices — SUA Oslo in particular — can be the binding constraint rather than the three-month legal deadline. Book the appointment when you book the flight, not when the deadline approaches.
This is where French employers most often assume the wrong default.
If the employee is locally hired in Norway, Norwegian social security applies from day one:
"If you are a citizen of an EU/EEA-country and come to work in Norway you automatically become a member of the Norwegian National Insurance Scheme from your first day of work."
— NAV
If the employee is genuinely posted — the French employer sends them to keep working for that employer — a France-issued A1 certificate attests that French social security law continues to apply, and French contributions continue instead (CLEISS).
Two things to hold onto:
A French national hired locally in Norway is not posted, whatever the paperwork is called internally.
"If you intend to stay in Norway for at least six months consecutively or more permanently, you must report a move to Norway."
At that point the employee reports the move and is assigned a national identity number (fødselsnummer), which supersedes the D-number. If you know at the outset that the assignment runs past six months, plan for this rather than doing the D-number process twice.
An EEA national ID card is sufficient — a passport is not required:
"…you have the right to stay in Norway as an EU/EEA national if you are an employee … and you have a valid identity card or passport."
— UDI
Worth checking early anyway: the same document has to satisfy the in-person ID check in step 2.
The corridor has no application to wait on, so the sequence is driven entirely by two dates: the first pay run, and three months after arrival.
All quotations are from official government pages, checked July 2026:
Rules and processing times change. Re-check the source pages before relying on any date in a live case.
ReloPass is coordination software. It does not provide legal, immigration, or tax advice.