Working in Belgium and Securing Legal Authorisation

Start by identifying the worker's nationality, present residence document and the activity. Those facts decide whether an employer needs a Belgian employment authorisation and whether a separate residence process applies.

Use the right access route

EU, EEA and Swiss citizens normally need no Belgian work permit. They still complete municipal residence registration when staying long enough, and the employer completes ordinary payroll and social-security formalities. A non-EU family member may have work access through a Belgian residence document; read the card or temporary annex itself rather than assuming that family status is enough. “Labour market: unlimited” permits work for any employer. “Limited” normally ties work to the authorised employer, job and conditions.

Some non-EU activities are exempt or use a special notification. Examples can include short business meetings, certain researchers, diplomats, journalists, athletes or artists, and limited intra-company or service activities. An exemption is narrow: verify duration, duties and documents with the Region where the work is mainly performed. A foreign residence card or work right from another EU country does not by itself authorise Belgian employment. Posted workers may also need a Limosa declaration and evidence that home-country social security continues to apply.

Employment of at most 90 days usually uses a regional work authorisation or work permit B, unless an exemption applies. The worker separately checks Schengen entry and stay rules. Employment and residence exceeding 90 days normally use a single permit, requested by the employer through Working in Belgium. The combined decision covers work and residence, but each authority decides its own part.

Do not confuse these categories:

• a highly skilled route tests qualification, function and salary;
• a European Blue Card has its own salary, contract and mobility rules;
• ICT, researcher, trainee, au pair and seasonal routes have distinct conditions;
• a shortage or medium-skilled route depends on the Region's current occupation list and classification;
• an “other” route may require the employer to prove that recruitment in the local labour market failed;
• a frontier worker or posting still needs the correct Belgian route even when the employer is abroad.

The competent Region is usually where the Belgian establishment unit employing the person is located. If there are several units, use the main workplace; if that cannot be determined, the registered office may control. No Belgian unit can shift competence to the actual workplace. Record the CBE establishment-unit number and the real work pattern, including remote work across Regions.

Before accepting “no permit needed”, keep the exact official exemption page, a copy of the worker's card or passport, contract, workplace analysis and any Limosa confirmation. Ask the regional economic-migration service about work authorisation, the Immigration Office about residence, the municipality about the local document, and the social-security authorities about Limosa or coverage. A recruiter, payroll provider or employer letter is not an official decision.

Choose the category before comparing salary. A job can meet a headline threshold and still fail because the qualification, contract, occupation list, working time or salary components do not qualify.

Three regional tests in 2026

For highly skilled employment in Flanders, the current annual threshold is €48,912. A qualifying worker under 30, nurse or teacher can use 80%, €39,129.60. With a Belgian contract that actually includes a thirteenth month and double holiday pay, divide the annual figure by 13.92: €48,912 becomes about €3,513.79 gross per month. For a foreign posting, divide by 12: €4,076 monthly. Do not count a benefit simply because it appears in an offer; the regional rules and contract must allow it. From January 2026, Flanders also narrowed eligible highly skilled functions and revised its medium-skilled list. The employer must state the joint committee, function and pay classification, and low-skilled function levels cannot be relabelled as highly skilled.

Brussels publishes monthly 2026 thresholds based on an average gross salary of €4,748. Examples are €3,703.44 for highly qualified staff, €6,647.20 for managerial staff, €4,748 for an EU Blue Card, and €3,086.20 for performing artists. ICT thresholds are €5,460.20 for managers, €4,510.60 for specialists and €2,611.40 for trainees. Brussels primarily tests basic monthly remuneration under salary code 1; genuine posting supplements can qualify, but expense reimbursements do not.

Wallonia's 2026 annual figures include €53,220 for highly qualified staff and €42,576 for a qualifying highly qualified worker under 30. Managerial staff need €88,790, the EU Blue Card €68,815, and the junior Blue Card €55,052. Every category must also respect the applicable collective agreement and the guaranteed average minimum monthly income, €2,233.61 from 1 July 2026, even for part-time work where the regional rule requires the full floor.

Salary figures are indexed and category-specific. Compare gross guaranteed pay for the actual reference period, not net salary, bonuses that are discretionary, relocation reimbursement or an optimistic exchange rate. Put the exact annual and monthly guaranteed amounts, hours, index clause and benefits in the signed contract or posting letter.

Use the European Blue Card only after checking its contract duration, qualification or experience evidence, salary, and employer-change rules. ICT is for a transfer within a qualifying corporate group, not an ordinary Belgian hire. Researchers generally need a recognised host and hosting agreement. Seasonal, trainee, au pair, specialist technician and frontier routes each limit duration or activity. If no privileged category fits, the employer must test the Region's shortage-list or “other” route and document recruitment where required.

Create a one-page route decision before filing: nationality and current card; employing entity and establishment unit; main workplace; duties and function code; contract duration and hours; diploma or experience; guaranteed salary components; posting, A1 and Limosa status; and desired start date. Have the employer confirm the selected portal category in writing. That record exposes category-shopping before it becomes a refusal.

The employer or its authorised Belgian representative normally files the application. The worker supplies personal evidence but should receive the submission receipt, reference and every final decision.

Build the file around the real job

First verify the employer in the Crossroads Bank for Enterprises, including its active status and correct establishment unit. Match that unit to the competent Region. The offer should identify the joint committee and classification, duties, workplace and remote-work pattern, hours, duration, gross guaranteed salary and components, holiday and thirteenth-month treatment, start condition, notice terms, relocation support and any repayment clause. Ask who will pay each government, visa, translation and professional cost. A clause making the worker repay every recruitment expense can be a serious warning.

The core file commonly needs:

• every relevant passport page and, for an in-country filing, the valid Belgian residence document;
• employer or representative identity and authority, a signed contract or posting letter, job description and category evidence;
• diploma, professional recognition or experience evidence where the route requires it;
• proof of health-insurance coverage or the required employer commitment;
• the official medical certificate and a criminal-record extract, normally legalised and translated where required and generally less than six months old for a first Brussels file;
• proof of the federal contribution payment, currently €152 for a single-permit application in 2026, unless the exact route or applicant is exempt;
• for a posting, A1 or other social-security evidence, Limosa confirmation, assignment duration and Belgian employment conditions.

Translations, legalisation, apostille, medical examination and police certificates have country-specific prices. Get written quotes and check whether Dutch, French, German or English is accepted by the competent Region. From 1 September 2026, Flanders additionally charges the employer €180 per first or renewal single-permit application through the portal; it is non-refundable and a missing payment can close the file after the completion period. Brussels and Wallonia do not automatically inherit that regional charge.

Submit through Working in Belgium using the correct enterprise or representative account. The system can create or require a BIS number for a worker not in the national register. Use descriptive file names, readable complete scans and consistent spelling. Download the acknowledgement and status history. A completeness request is not a refusal: answer through the stated channel by the exact deadline and keep the uploaded response.

In Wallonia, single permits already use the portal. Since 1 May 2026 permit-B applications also go online; paper remains a transition only through 31 August 2026, except current paper routes such as au pairs and ministers of religion. Flanders moves remaining work-card applications to the one-stop shop from 1 September.

The Region assesses employment first or in coordination with the Immigration Office, which assesses residence. The statutory combined clock often runs only once the file is declared admissible or complete. Wallonia states a decision within four months after admissibility; Brussels Blue Card files state up to 90 days after completeness. These are legal maxima for specified routes, not promises. Do not resign, relocate or book non-refundable travel based only on an acknowledgement.

There is no single rule that everyone must wait for a physical card. Work may start only when the worker has both the required work authorisation and a residence document that permits the person to be in Belgium for that employment. Read the dates, employer restriction and labour-market wording together.

What each status proves

• Application pending: an acknowledgement or portal status proves filing, not permission to work.
• Regional work approval only: this approves the employment side but does not by itself create Belgian residence. A first applicant abroad still waits for the positive combined residence decision and entry document.
• Annex 46 or 47: this records a positive combined decision. A worker abroad presents it with the passport to obtain the D visa where one is required. It is not a substitute for border and municipal steps.
• D visa with the single-permit notation, commonly B34 or B29: this permits entry for the approved purpose. After arrival, register with the municipality within eight working days and follow its card process. Work begins only within the approved dates and circumstances.
• Valid electronic residence card plus new regional approval: this can allow an in-country worker or certain employer changes to start before a replacement card, where the competent Region confirms the scenario.
• Annex 49: this is temporary evidence of residence while an admissible renewal or issuance is pending. It is not itself a work permit. Work requires a still-valid or newly approved work authorisation, and the annex must carry the appropriate labour-market wording.
• Single-permit card: check expiry and “limited” or “unlimited” labour-market access. A limited card does not make every employer or job lawful.

For a first application from abroad, the safe sequence is combined approval, D visa if required, travel, municipal registration and work within the authorisation's start conditions. For a lawful in-country application, obtain written confirmation from the Region and municipality of the exact documents permitting the start. Do not infer permission from an appointment slip.

On arrival, take the passport, visa, Annex 46/47, address evidence, photos if requested and local fee method to the municipality. Municipal card prices differ, so request the current ordinary and urgent tariff. The police residence check and card production can take time. Register for payroll and Belgian social security, choose a health-insurance fund or CAAMI route when eligible, and retain the employment declaration and first payslip. A posted worker may remain under foreign social security only with valid evidence.

Independently compare the first payslip with the contract: employer identity, joint committee, function, hours, gross salary, taxable benefits, social contributions, withholding and net payment. Confirm the employer did not reduce guaranteed salary below the permit threshold by treating reimbursed costs as pay. Preserve the portal decisions, visa, card and scans outside the employer's account.

If the municipality, employer and Region give conflicting start advice, do not start on an oral assurance. Ask the regional economic-migration service to confirm the work side and the Immigration Office or municipality to confirm residence in writing. Working without the correct combination can expose employer and worker to inspection, wage recovery issues and withdrawal proceedings.

Students, family members and self-employed people do not use the ordinary employer-sponsored route in the same way. Identify the person's residence basis and the exact activity before signing a contract or invoice.

Students and researchers

A non-EU student with a Belgian residence document that authorises student work can normally work up to 20 hours per week during the academic year, provided work remains compatible with study. During official holidays the immigration-hour limit can differ, but the residence status and academic obligations still matter. The separate 650-hour student social-contribution quota is a social-security discount, not permission to exceed the immigration limit. Track both through Student at Work and retain schedules and payslips. Self-employed activity is not student employment and can require a professional card.

Graduates on a search year should read the labour-market wording on their issued document. An Annex 49 alone is not work permission. When an employer sponsors a new single permit, compare its start conditions with the current search-year residence before changing status. Researchers with a recognised hosting agreement may use the researcher route rather than a highly skilled employee category; university job title alone does not decide it.

Family and protection-based access

A spouse or partner joining an EU citizen, Belgian or non-EU sponsor may receive a card or temporary document with limited or unlimited labour-market access. The family relationship does not itself prove the start date. Show the prospective employer the actual current document and, when unclear, request municipal or regional confirmation. Changes such as separation, sponsor departure or a pending renewal can affect residence even when an employment contract continues.

Recognised refugees and some other protected residents may have unrestricted access, while an applicant for protection follows the wording and waiting rule applicable to the issued document. Never copy a colleague's rule to a different card type.

Self-employment uses a professional card

Freelancing, consulting through one's own business, platform work invoiced independently and managing an enterprise may be self-employment even when there is one client. Many non-EU nationals need a regional professional card unless exempt. Flanders, Brussels and Wallonia assess economic value, qualifications, business viability and lawful residence under separate processes and fee schedules. A single permit for salaried work does not automatically authorise side invoices, and a professional card does not replace residence permission or enterprise registration.

Before applying, classify the activity with an enterprise counter or adviser; prepare a business plan, financing, qualifications, contracts or letters of intent, and regulated-profession recognition. Budget for the application, card issuance, enterprise-counter registration, social-insurance fund, accounting, VAT and professional insurance where relevant. Do not pay a commercial intermediary merely for a promise of approval.

After authorisation, register the enterprise and establishment unit, join a social-insurance fund before starting, activate VAT when required, arrange accounting and invoices, and keep the professional card and residence valid. False self-employment is a risk when a “client” controls hours, place and supervision like an employer while avoiding payroll.

For every special route, make a two-column check: what authorises residence, and what authorises the specific work. Record hours, employer or client, work location, card wording, expiry, required notification and social-security treatment. If either column is uncertain, obtain written confirmation before the first shift or invoice.

A fixed-term permit is normally tied to the authorised employer, workplace, job category and conditions. A change of employer, function, main Region, hours or salary can therefore require notification or a new authorisation before the change takes effect.

Changing employer safely

In Flanders, a new employer normally files a completely new work-authorisation request. Work for the new employer starts only after Flemish work approval and while the worker still holds a valid electronic residence card or a correctly issued Annex 49. The worker may continue the old authorised job through a valid notice period; once that employment ends, its work right ends even if the residence card has not yet been withdrawn. The often mentioned practical three-month residence-revocation interval is not a guaranteed job-search permit.

Wallonia likewise says the new employer must obtain authorisation before employing the worker unless the residence document states unlimited labour-market access. Brussels applies its category rules. European Blue Card mobility is different: in Brussels, during the first year the new employer notifies the Region and the holder generally waits 30 days unless approval or refusal comes sooner; later mobility is broader if the new job still meets Blue Card conditions. Flanders requires approval of a first-year Blue Card change and has broader access after the protected period. Check the Region's current rule rather than transferring one rule across Belgium.

For a significant change in workplace, function or hours, notify the existing Region before implementing it. A move between Regions can change the competent authority and threshold. Preserve the old contract, notice letter, end-date report, new filing, approval and residence proof.

Renew before residence becomes the problem

Flanders generally accepts a single-permit renewal two to six months before expiry, though a Blue Card page currently gives two to four months. File under the category's own rule. The employer supplies the current passport and residence card, insurance, contract, payslips or annual individual account and posting evidence. A late request while the card is valid may still be accepted; after residence expiry it can be inadmissible and require departure and a new first application. A municipality may issue Annex 49 only after the renewal is declared admissible. Avoid travel while relying on a temporary annex without written re-entry advice.

Track expiry yourself and ask the employer for the portal receipt. If it refuses to renew, immediately obtain the reason, employment end documents, payslips and social documents, and get immigration advice before residence expires.

Refusal, withdrawal or delay

Read the decision, authority and appeal instructions. A regional refusal concerns work; a federal residence refusal or withdrawal uses a different remedy, often involving the Council for Alien Law Litigation. Wallonia requires a motivated registered appeal against work refusal or withdrawal within one month and supporting evidence; a new complete application may be faster when the defect is curable. Flanders provides a regional appeal channel and also allows a corrected new filing. Do not assume an appeal suspends the decision.

For unpaid salary or unlawful employment conditions, keep time records and contact the labour inspectorate or a union. First-line legal help is generally free; second-line representation depends on means and may be fully or partly free. A lawyer, translation and bailiff can cost extra. If a notice threatens immediate removal, detention, exploitation or homelessness, seek specialist legal or emergency help the same day.