How to comply with Austria's LSD-BG rules when posting workers

Sending employees to work in Austria requires strict adherence to local labor standards. Under Austria's Wage and Social Dumping Combating Act (LSD-BG), foreign employers posting workers to the country must pay them at least the minimum wage established by the relevant Austrian collective bargaining agreement, known as the Kollektivvertrag, for their specific sector. This rule applies regardless of the law governing the employment contract.

The Austrian authorities actively police compliance. Standardizing pay across borders means you cannot simply rely on home-country pay scales or general European averages. Every sector has its own Kollektivvertrag, and identifying the correct agreement is the first mandatory step for any cross-border posting.

Matching the basic hourly rate of the Kollektivvertrag is only part of the financial obligation. Most Austrian collective bargaining agreements entitle employees to two extra monthly payments per year. These are the 13th salary, known as Urlaubsgeld or holiday pay, which is typically paid in June, and the 14th salary, known as Weihnachtsgeld or Christmas bonus, which is paid in November.

For foreign employers, calculating these payments for temporary postings requires careful accounting. If a posted worker does not work the entire calendar year in Austria, they must be paid a pro-rata, or aliquot, share of both the 13th and 14th monthly salaries. This calculation is based strictly on the number of months or days worked during the Austrian posting.

These special payments benefit from a preferential flat tax rate of just 6% under Austrian tax law. This low tax rate makes the net payout higher for the worker while keeping the structure compliant with Austrian payroll standards. Employers must ensure their home-country payroll systems can process these specific allocations correctly.

Additionally, employers must monitor the total duration of the deployment. Under Austrian labor law, if a posting exceeds 12 months, the employer must apply the full provisions of Austrian labor law if they are more favorable to the worker. This is known as the principle of favorability. Tracking the 12-month limit is vital to prevent unexpected shifts in employment terms, leave entitlements, and working hour restrictions.

Before any work can begin on Austrian soil, employers must complete formal administrative notifications. Under Section 19 of the LSD-BG, foreign employers must submit a ZKO3 electronic notification to the Central Coordinating Agency (ZKO) of the Federal Ministry of Finance. If a temporary work agency is hiring out workers to Austria on a cross-border basis, they must submit a ZKO4 notification instead of a ZKO3. This notification must be processed before the posted worker starts their duties.

Any changes to the initial deployment plan require immediate updates. Employers must immediately submit a change report, known as a ZKO3A, to update the authorities on subsequent modifications, such as changes to the physical work location or the duration of the posting. Under Section 23 of the LSD-BG, the posting company must also designate a contact person. This contact person can be either one of the posted employees or a professional legal representative domiciled in Austria, and they must be available to liaise with the authorities.

During the posting, specific documents must be kept readily available at the Austrian workplace or accessible electronically on-site. Payroll and remuneration-related documents, including payroll records, may be kept on record in either German or English. To ensure compliance during a spot check, you must maintain the following items:

• The submitted ZKO3 or ZKO4 notification form
• The social security A1 certificate
• The employment contract of each posted worker
• Detailed pay slips and proof of wage payment
• Records of hours worked by each employee

Securing an A1 certificate from home-country social security administrations can sometimes take weeks. If an A1 certificate cannot be secured before the posting starts, employers can prevent a penalty by presenting an alternative document. This alternative document must be in German or English and must prove the employee's registration for social insurance in their home country.

Not all cross-border assignments require the standard notification process. Employers based in the EU, EEA, or Switzerland are exempt from posted worker notification requirements in Austria if the posted employees earn a gross monthly salary of at least €8,085 in 2026. This threshold represents an increase from the €7,740 threshold applied in 2025. To qualify for this high-salary exemption, the salary must be paid 14 times a year, consisting of 12 regular monthly payments plus the two additional special payments.

Different rules apply when the posted staff are third-country nationals rather than EU citizens. When an employer submits a ZKO notification for third-country national workers, the ZKO automatically forwards the notification to the Public Employment Service (AMS). The AMS then verifies the employment authorization of these workers and issues an EU posting confirmation, ensuring they are legally allowed to work in the country.

Recruitment practices must also adapt to upcoming European regulations. Under the EU Pay Transparency Directive, which EU Member States must transpose by June 7, 2026, employers in Austria must disclose starting salaries or pay ranges in job advertisements or before the first interview. This means that even before workers are posted, pay transparency must be integrated into the hiring and posting workflow.

The construction sector faces the most rigorous oversight under Austrian labor law. Foreign employers posting workers to Austria for construction work must register them with the Construction Workers' Paid Leave and Severance Pay Fund (BUAK) and pay leave supplements for each day worked. This requirement operates alongside standard social security and tax processes, adding a distinct layer of administrative overhead.

BUAK is a public corporation established in 1946 that manages construction workers' leave entitlements and pays out holiday claims directly. Because construction work is often seasonal and split across multiple employers, BUAK acts as a centralized repository. Foreign employers must report daily working hours and pay the required daily supplements directly to the fund to ensure their workers accumulate leave days legally.

Compliance in construction is also heavily policed through supply chain pressure. In Austria's construction sector, main contractors bear joint liability for subcontractor wage and social security compliance throughout the entire contracting chain. This means Austrian main contractors will scrutinize subcontractor documentation thoroughly. If a subcontractor fails to register with BUAK or underpays staff, the main contractor can be held financially responsible.

Failing to meet the strict demands of the LSD-BG carries severe financial consequences. For violations regarding reporting obligations or failing to keep necessary documents available, employers can face administrative penalties of up to €20,000, regardless of the number of employees affected. If an employer obstructs a wage audit or fails to submit wage records when requested, the penalty can rise to €40,000.

The most severe penalties are reserved for underpayment. In cases of wage dumping, employers can face a capped penalty of up to €400,000, which depends on the amount of remuneration withheld. Preparing payroll, securing A1 certificates, and filing ZKO notifications well in advance of the posting start date is the only reliable way to avoid these liabilities.