Changes you must report across the border

For an EU/EFTA frontier worker, the G permit is issued by the canton of employment. That is the shared rule for residents of France and Germany. Open the last permit decision or renewal letter and identify the issuing cantonal migration or labour-market authority before searching for a form.

The canton matters. Basel-Stadt uses one mutation form for job, employer, foreign address, civil-status and name changes. Geneva uses separate online paths and publishes specific deadlines. Treat those as examples of the same cantonal responsibility, not as one nationwide procedure.

Put the change into one of five groups: new employer, end of employment, foreign home address, personal data such as name or civil status, or a change in work pattern that affects the original permit or notification. Then open the issuing canton's current instruction for that exact group.

A job change may require the new contract and an end-of-service record. An employment end may be reported by the employer, the worker or both, depending on the canton. Address and civil-status updates may use a personal-data mutation. The evidence tells you which route applies; the label “change” alone does not.

First, obtain the document that proves the event: signed contract, end certificate, new address evidence or civil-status document. Second, submit the issuing canton's current form or online notice. Third, save the submission receipt and any replacement permit. Finally, check whether the employer, pension fund, accident insurer or payroll team needs the same update.

Your residence country may also need a separate report for tax, social security, registration or benefits. That is a second fork: use the competent French or German institution for the residence-side duty rather than assuming the Swiss submission updates it.

Keep the old permit, change evidence, submitted form, timestamp or receipt, authority reply and new permit together. Geneva's address guidance explicitly tells permit holders to retain old documents until the replacement arrives; the same evidence habit protects you when another canton uses a different channel.

This is different from simply building a cross-border paperwork file. Storage keeps documents findable. Reporting changes the authority's record. Your next action is to locate the issuing canton on the permit and bookmark its current mutation page.