When a Thai company moves its registered office, a foreign employee's work permit does not automatically stay valid. It must be amended with the Department of Employment to reflect the new address, and the record held by the Department of Business Development and the Revenue Department has to match it. If the move crosses provinces, the Non-Immigrant B visa extension tied to that work permit also needs to be processed at the immigration office that covers the new location. Skipping any of these steps leaves the employee's documents inconsistent with official company records, which is exactly the kind of mismatch immigration officers flag during renewals, audits, or 90-day reporting.
TL;DR
- A registered address change does not cancel a work permit, but it does make the permit's listed address incorrect until updated with the Department of Employment.
- Employers must refile an updated company affidavit, registration certificate, and Department of Business Development filing receipt alongside existing work permits, passports, and visas.
- Moving to a different province also requires processing the Non-B visa extension at the immigration office covering the new address.
- An address change can put the work permit out of line with the company affidavit. Timing depends on the office and on whether the DBD filing is already complete, so don't budget a fixed number of days.
- A work permit is tied to the employer named on it. Moving someone between branches may still need an update with the Department of Employment, so don't assume one head-office filing covers every site.
About the Author: This article draws on real-world work permit and visa documentation requirements for foreign employees in Thailand, where consistent records across the Department of Employment, Department of Business Development, and immigration offices are essential to avoid compliance gaps.
Why Does a Registered Address Change Affect a Work Permit at All?
A Thai work permit is not a standalone document. It is tied to a specific employer, a specific job description, and a specific registered address recorded with the Department of Employment. When any of those three elements changes, the permit no longer matches the company's current legal records. Changing a company's registered address requires updating public filings with the Department of Business Development and the Revenue Department, and that update in turn triggers a requirement to notify the Department of Employment so the foreign employee's work permit reflects the new corporate address. Think of it less like updating a mailing address on a utility bill and more like updating the registered agent on a corporate filing: the underlying business hasn't changed, but every official record that references the old detail now needs to be reconciled, because immigration and labor authorities cross-check these records against each other.
This matters practically because a work permit showing an outdated address can create friction at renewal time, during a work permit inspection, or when the employee applies for their annual Non-B visa extension. None of this means the employee loses work authorization the moment the company signs a new lease. It means there's an administrative clock running, and the longer the mismatch sits unresolved, the more likely it surfaces as a problem later.
What Documents Does the Employer Need to Submit?
Updating a foreign employee's records after a corporate address change is a document-heavy process, and missing one piece is the most common reason these filings get delayed. To update the work permit and associated visa records, employers generally need to submit:
- An updated company affidavit reflecting the new registered address
- The updated company registration certificate
- The Department of Business Development filing receipt confirming the address change was recorded
- The employee's existing work permit
- The employee's passport
- The employee's current visa
- Recent photographs of the employee, per standard work permit documentation requirements
Every one of these needs to be internally consistent. If the affidavit shows the new address but the DBD filing receipt hasn't been processed yet, the Department of Employment has no basis to confirm the change actually happened. This is where companies that treat the address change as a single administrative task, rather than a sequence of dependent filings, tend to lose time. The DBD filing has to land first, the affidavit has to reflect it, and only then does the work permit update have a clean paper trail to point to.
How Long Does the Work Permit Update Actually Take?
Work permit updates are processed by the Department of Employment, not the Immigration Bureau, which is a distinction that trips up a lot of HR teams handling this for the first time. Timing depends on the office and on whether the DBD filing is already complete, so don't budget a fixed 7-to-10-day clock. That Department of Employment step also does not include the DBD and Revenue Department updates ahead of it, or the separate immigration-side process if the move also requires a new visa extension.
Companies sometimes treat one office's processing window as the full timeline for "sorting out the move," when it's really just one stage. Building in the upstream DBD filing time and, where relevant, the downstream immigration visit, gives a far more realistic picture of the total disruption to an employee's documentation.
What Happens If the New Address Is in a Different Province?
An interprovincial move adds a second track to this process entirely. Building on the work permit update discussed above, the harder question for companies relocating across provincial lines is what happens to the Non-B visa extension that runs alongside the work permit. That extension is administered by the immigration office with jurisdiction over the company's registered address, so when the address moves to a different province, the employee's Non-B extension has to be processed at the immigration office covering the new location, not the old one.
This is a genuinely separate filing from the work permit update, handled by a different government body, on a different timeline. A company that updates its work permit records but never transfers the Non-B visa jurisdiction to the correct provincial immigration office ends up with a technically valid work permit sitting next to a visa extension record anchored to an office that no longer has authority over the case. That inconsistency is the kind of thing that surfaces at the worst possible time, usually during an annual extension renewal.
Should Companies With Multiple Offices Handle This Differently?
Companies operating more than one location in Thailand face a related but distinct question: if an employee is going to move between offices regularly, is there a way to avoid repeating this process every time? A work permit is tied to the employer on the permit. If someone will move between branches, ask the Department of Employment whether that move needs an update before you assume one head-office filing covers every site.
If people will move between sites, ask the Department of Employment before you treat one filing as cover for every branch. A later move can still mean another update.
What Should Employers Do to Avoid Delays?
Sequencing is the single biggest factor in how smoothly this process goes. A practical order of operations looks like this:
- File the address change with the Department of Business Development first, and wait for the filing receipt.
- Obtain the updated company affidavit and registration certificate reflecting the new address.
- Submit the work permit update to the Department of Employment with the affidavit, DBD receipt, existing work permit, passport, visa, and photographs.
- If the move crosses provinces, separately contact the immigration office covering the new address to process the Non-B extension transfer.
- Confirm both records (work permit and visa) show the same current address before considering the move "closed" from a compliance standpoint.
Managing a work permit update during a corporate address change involves coordination across three government bodies. For guidance on the specific steps your company needs to take, speak with an immigration consultant or contact Issa Compass for an overview of the process.
Frequently Asked Questions
Does a work permit become invalid the moment a company changes its registered address?
No. The permit remains valid, but it no longer matches current company records until it is formally updated with the Department of Employment. Leaving it unupdated creates a compliance gap rather than an immediate cancellation.
Who is responsible for updating the work permit after an address change, the employer or the employee?
This is an employer-driven filing, since it stems from a corporate registration change. The employer submits the updated affidavit, registration certificate, and DBD filing receipt alongside the employee's personal documents.
Does the employee need a new visa if the company just moves offices within the same province?
Not necessarily a new visa, but the work permit still needs updating. The Non-B extension typically only requires a jurisdiction change when the move crosses into a different province's immigration office.
How long should a company budget for the entire process, not just the work permit update?
Don't budget a fixed 7-to-10-day Department of Employment window. Account for the DBD filing time beforehand and, for interprovincial moves, a separate visit to the new immigration office. Timing depends on the office and whether the paperwork is already complete.
Where can a company get help with this process?
Companies should consult with an immigration consultant or speak with their legal advisor about the specific requirements for their situation. Issa Compass is a real-time visa platform that handles visa applications and educational visa routes; for work permit and corporate visa filings, an immigration consultant with expertise in employment law is the right resource.
What happens if the employer updates the work permit but forgets the Non-B visa jurisdiction transfer?
The records become inconsistent, with a valid work permit sitting against a visa extension anchored to an immigration office that no longer has jurisdiction. This is the kind of mismatch that typically surfaces at the next annual extension.
Is there a way to avoid repeating this process for employees who move between a company's branch offices?
Not automatically. A work permit is tied to the employer on the permit. Ask the Department of Employment whether a move between branches needs an update before you assume one head-office filing covers every site.
About Issa Compass
Issa Compass is a real-time visa platform that helps individuals manage Thai visa filings, backed by immigration experts and a legal team who review each case before submission. The platform's decision engine is trained on real-time embassy and government requirements. Issa Compass is not a government agency; final approval of any visa rests with the relevant Thai government authorities. For guidance on work permit updates and corporate visa matters, consult an immigration consultant in your jurisdiction.
