Your permit is not permission to work in Poland. It is permission to do a named job, for a named employer, on named terms. Those terms are printed on the decision, and changing them is a change to the basis on which the permit was granted — not an administrative detail you tidy up at renewal.

So the verdict, and it fits in one line: ask before you sign, not after. A question to the office or a lawyer before a contract change costs an hour. The same question after costs a renewal, and at Mazowieckie a renewal is measured in months rather than weeks.

Checked on 7 September 2026. This describes what applicants are asked for and what the decisions say; it is not immigration advice and it is not a statement about your case.

Read your decision, not your card

The karta pobytu in your wallet is an identity document. It carries very little. The decision that produced it is the thing that matters, and most people have not opened it since the day it arrived.

On a single permit — the temporary residence and work permit that most readers of this site hold — the decision typically specifies:

  • the employer, by name
  • the position, by title
  • the minimum remuneration the permit is conditioned on
  • the working time, full or part
  • the basis — the type of contract you are to be employed under

Those are conditions, not description. The permit was granted because that arrangement was assessed against the rules. A different arrangement has not been assessed.

Go and find the decision now, before you read the rest of this. If you filed through MOS since 27 April 2026 it is in the portal; if you filed on paper before that, it is the letter you photographed and forgot.

The three changes, from cheapest to most expensive

Same employer, same job, more money

The easiest case. A raise does not undercut a permit conditioned on a minimum. It is worth keeping the paperwork, because remuneration is checked again at renewal and at permanent residence, but it is not a problem.

The exception is the EU Blue Card, where the salary floor is the whole basis of the permit and is recalculated annually — 150% of the previous year's average wage, 13,355.34 zł for 2026. A salary that cleared the threshold in 2025 does not automatically clear the 2026 one. That is a change in the threshold rather than in your contract, and it moves underneath you every February.

A different employer, or a materially different job

This is a reportable change with a defined process, and it is common enough that it has its own post: what you must report when your employer changes covers the case where it happens while you are still waiting, which at nine to fourteen months is most cases.

Two things worth stating here because they are consistently misunderstood:

A single permit is employer-specific. It is not a general work authorisation you carry between jobs. Moving employers is not a notification you make at your convenience.

“Materially different” includes the position. A promotion into a different role, a transfer to another entity in the same group, a change from full to part time — each of these touches something the decision names.

Employment to B2B

The expensive one, and the reason this post sits in the Working section rather than in Staying Legally.

A work permit authorises employment. Invoicing a client through your own JDG is not employment; there is no employer, and frequently there is no longer anything for the permit to attach to. On top of that, running a business here at all depends on your residence title being one the statute allows it for — and the single permit commonly is not one of them.

So the move from an umowa o pracę to B2B, on a single permit, is usually two problems stacked: the permit’s basis has gone, and the new activity may not be permitted on that title at all. It is the change that most reliably goes wrong on this site’s mailbag, and it goes wrong quietly — CEIDG registers you without comment, the invoices clear, and nothing surfaces until a renewal.

Employment to umowa zlecenie

In between, and it depends entirely on what your decision says. A permit conditioned on employment under the Labour Code is not obviously satisfied by a civil-law contract of mandate. Sometimes the decision contemplates it. Often it does not.

This is the case where the answer is genuinely “read the decision, then ask”, and where an employer proposing the change may not have considered your permit at all — it is their cost saving, and your legal status.

Why it surfaces later rather than immediately

Nothing checks your contract in real time. The consequences arrive at three moments, all of them months or years away, and all of them looking backwards.

At renewal. You are asked what you have been doing and on what basis. A period on a contract type the permit did not cover is a period to explain.

At permanent residence. The five-year route asks for continuous residence on qualifying grounds. A gap in the middle is not a paperwork problem; it is arithmetic that does not reach five. The renewal and permanent residence ladder sets out what each rung asks for.

In a case already open. If Mazowieckie is holding your file, everything above lands on a decision that has not been made yet. The statute gives the office 60 days under Article 112a of the Aliens Act; Warsaw in mid-2026 was running nine to fourteen months. A change you make in month three sits in a file nobody reads until month eleven, and by then it is history rather than a question. Both numbers, and what the gap means in practice.

This delay is what makes the advice at the top load-bearing. In a system that answered in sixty days you could file, see the outcome and adjust. In one running at nine to fourteen months, a decision you take casually today is assessed a year from now against a file you can no longer easily amend.

What to do this week

  1. Open the decision and write down the five conditions above on one line each.
  2. If a contract change is being discussed, put that line in front of whoever is proposing it. Employers who have done this before will recognise the problem immediately.
  3. If the change is to B2B, resolve the eligibility question first — whether your title permits business activity at all — and treat it as a lawyer question rather than a forum question.
  4. If a case is open at Mazowieckie, assume any change is reportable and ask what the reporting route is now that filings run through MOS.

Where this post is uncertain

The permit conditions listed above are what these decisions carry; the exact wording and the exact consequences are specific to your decision and to the office holding it, and offices differ. Whether a particular contract change satisfies a particular permit is a determination for the voivode, not a lookup — and this post deliberately does not tell you that you may work, stay or change anything. It tells you which document answers the question and who to ask. Reporting deadlines and the mechanics of notifying a change mid-case are covered in the post linked above rather than restated here, because they are the kind of detail that goes stale in one direction only.