How long is the short-term L permit valid for?

The L permit has a maximum initial validity of 1 year. After this period, it is possible to request an extension from the competent SEM and cantonal authorities if the employment continues and there are no grounds for refusal (tax debts, irregular AVS/AI payments, shortages of social contributions). Each extension requires a new assessment by the authorities. The permit always remains linked to the employer specified in the initial application.

What happens if I change employer during the L leave?

The L permit is bound to the employer indicated in the application. If you terminate the employment relationship and start a new collaboration with a different employer, you must apply for a new L permit in the name of the new employer at the cantonal authority. It is not possible to automatically transfer the permit: a new complete procedure is required with the cantonal authorities and the SEM, with the documentation relating to the new employment attached.

Is it possible to switch from permit L to permit B?

Yes, it is possible, but not automatically. The transition occurs when the worker demonstrates lasting occupational and personal stability. The B permit, once issued, is renewable every 5 years and offers greater occupational freedom: it is not linked to a single employer. The transition request must be evaluated by the competent authorities (SEM and canton) according to the specific federal and cantonal requirements of the canton of residence.

What are the obligations to maintain the L permit on extension?

To maintain the L permit and obtain the extension, you must pay the AVS/AI/IPG contributions (5.3% to be paid by the employee) on time, be in tax compliance at the federal, cantonal and municipal levels, and maintain the employment relationship for which the permit was issued. Failure to comply with these obligations may result in refusal of the extension or early revocation of the permit before its expiry.

How long does it take to get the L permit?

The release procedure generally takes 4-8 weeks from when the documentation is complete. It is advisable to start the request with the cantonal authority well in advance of the start date of the work. The employer prepares the documentation (contract, declaration of occupational unsuitability, identification data), which is transmitted to the SEM for federal evaluation. Delays in submitting the extension application before the deadline may interrupt the right to work.

Permit L short duration: validity and extension (cross-border guide)

Di Redazione Frontaliere Ticino · Published on 24 August 2026

Swiss State Secretariat for Migration (SEM) office with L permit documentation

Short-term permit L: maximum duration of 1 year, extension conditions, constraints on the employer and procedure for transition to residence permit B in Switzerland.

Context

In a nutshell

The L permit allows temporary work in Switzerland for up to 1 year, renewable
Remains linked to the employer: change of employment requires new application
Pass to non-automatic B permit; requires proven occupational stability

Key facts

What: Short-term leave for foreign workers in Switzerland
Maximum validity: 1 year (renewable according to SEM-cantonal assessments)
Competence: State Secretariat for Migration (SEM) + cantonal authority
Main constraint: Linked to the employer specified in the request
Transition: Towards permit B (residence) if proven occupational stability

# What is Short Term L Permit

The L permit is a temporary work permit issued by the State Secretariat for Migration (SEM) and the competent cantonal authority for foreigners wishing to carry out a professional activity in Switzerland. This is the shortest solution among Swiss migratory statuses: the maximum validity is 1 year, with the possibility of extension according to the procedures defined by federal laws on migration.

Unlike the B residence permit (renewable) and the C residence permit (normally issued after 10 years of permanent residence in the country), the L permit is designed as a temporary bridge for foreign workers who do not intend to settle permanently in Switzerland, or who do not yet have the requirements for a permanent

Operational details

Extension and renewal of permit L

The extension of the L permit beyond the first year is not automatic. The SEM and cantonal authorities assess each renewal request on a case-by-case basis, considering factors such as the continuity of employment, the economic situation of the employer, the absence of grounds for refusal (deficiencies in the payments of AVS/AI contributions, debts to the tax administration, etc.).

The maximum number of consecutive years during which it is possible to maintain an L permit varies according to specific circumstances, but the federal law establishes principles of temporaryity: the L permit is conceived as a bridging solution, not as a permanent status. If the worker wishes to settle in Switzerland beyond the initial term and renewals of the L permit, he/she will have to move towards the B (residence) permit, which is renewable and offers more favourable employment conditions.

Transition from permit L to permit B

The transition from permit L to permit B takes place when the worker demonstrates lasting occupational and personal stability in the canton. There is no automatic right to this transition: the application for permit B must be evaluated by the SEM and cantonal authorities according to the specific federal and cantonal criteria.

Usually, the transition from L to B assumes a continuity of employment (same employer or subsequent employers without long interruptions), certified economic and fiscal stability, and absence

Useful planning tools

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Key points

How to Request a Short-Term L Permit

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Frequently Asked Questions

How long is the short-term L permit valid for?: The L permit has a maximum initial validity of 1 year. After this period, it is possible to request an extension from the competent SEM and cantonal authorities if the employment continues and there are no grounds for refusal (tax debts, irregular AVS/AI payments, shortages of social contributions). Each extension requires a new assessment by the authorities. The permit always remains linked to the employer specified in the initial application.
What happens if I change employer during the L leave?: The L permit is bound to the employer indicated in the application. If you terminate the employment relationship and start a new collaboration with a different employer, you must apply for a new L permit in the name of the new employer at the cantonal authority. It is not possible to automatically transfer the permit: a new complete procedure is required with the cantonal authorities and the SEM, with the documentation relating to the new employment attached.
Is it possible to switch from permit L to permit B?: Yes, it is possible, but not automatically. The transition occurs when the worker demonstrates lasting occupational and personal stability. The B permit, once issued, is renewable every 5 years and offers greater occupational freedom: it is not linked to a single employer. The transition request must be evaluated by the competent authorities (SEM and canton) according to the specific federal and cantonal requirements of the canton of residence.
What are the obligations to maintain the L permit on extension?: To maintain the L permit and obtain the extension, you must pay the AVS/AI/IPG contributions (5.3% to be paid by the employee) on time, be in tax compliance at the federal, cantonal and municipal levels, and maintain the employment relationship for which the permit was issued. Failure to comply with these obligations may result in refusal of the extension or early revocation of the permit before its expiry.
How long does it take to get the L permit?: The release procedure generally takes 4-8 weeks from when the documentation is complete. It is advisable to start the request with the cantonal authority well in advance of the start date of the work. The employer prepares the documentation (contract, declaration of occupational unsuitability, identification data), which is transmitted to the SEM for federal evaluation. Delays in submitting the extension application before the deadline may interrupt the right to work.