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Labour hire or works contract in a business acquisition: review records and actual practice

Review labour hire in a business acquisition: economic substance, AÜG records, EEA assignments and the data room before signing and completion.

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17 September 2026 · Mag. Bernhard Brandauer, Rechtsanwalt

When a buyer acquires a personnel provider or a business using external personnel, the actual performance determines the classification. An agreement may be called a works contract and still amount to labour hire in economic terms.

The due diligence file must allow the acquirer to trace each assignment, the businesses involved and the required records. Section 4 AÜG focuses on the true economic substance. Section 13 AÜG requires ongoing records by the provider and adds duties for EEA-sourced assignments.

This post covers the AÜG classification and evidence before signing and completion. Transfer of business under AVRAG and the review of false self-employment are separate subjects.

Classify labour hire before completion

Does the actual performance point to labour hire?

Answer two questions on the economic classification and the evidence. You receive an initial orientation for the transaction review.

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01 Question 1

Does the actual cooperation match the agreed works contract?

The economic substance is decisive. Review the work result, materials and tools, integration into the business and line or technical supervision.

All paths at a glance

Overview of all answers.

01

The economic substance points to labour hire. The classification belongs before signing.

Classify each assignment by reference to the actual workflow. Record the result owed by the external contractor, who supplies materials and tools, who organises the daily work and who bears responsibility for success. The label works contract does not decide the classification.

Then record the provider, hirer, affected personnel and assignment periods. The post on false self-employment and freelancers addresses a different review subject. Labour hire records and transaction consequences require their own analysis.

02

The documentation is incomplete. The data room needs reliable AÜG evidence before completion.

Request the provider records and the copies of service notes and notices. Check whether each person record identifies the hirer and the start and end of every assignment. The retention period is five years after the last entry.

For personnel supplied from the EEA, the hirer must keep its own records as well. The data room should therefore show the relevant providers, their seats, assignment dates and the required notices. Disclose missing records and allocate remediation, responsibility and an appropriate contractual consequence.

03

The classification and evidence are prepared. AÜG risks now need to be reflected in signing and completion.

Bring the classification for each assignment together in a transaction schedule. Link the agreement, actual organisation, records, open evidence and responsible person. This distinguishes points that must be resolved before signing from support required up to completion.

Govern access to records, completion of missing data, cooperation on questions and the consequences of deviations in the acquisition agreement. The information rights and transfer-of-business issues in the separate post on works councils and business transfers remain distinct.

The economic substance determines the classification

Section 3 AÜG describes the key roles. The provider contractually commits personnel to perform work for third parties. The hirer uses the provider's personnel for tasks of its own business. The term covers employees and employee-like persons. The transaction review should assign these roles for each agreement and assignment.

Under section 4 AÜG, the true economic substance is decisive. For a relationship described as a works contract, four questions are particularly important: Is there a distinguishable work attributable to the contractor? Is the work performed mainly with the contractor's materials and tools? Are the personnel integrated into the hirer's organisation and subject to its line and technical supervision? Does the contractor bear responsibility for the success of the work?

These features must be supported by evidence from the actual practice. The contract heading, description of services and invoice do not answer the question on their own. Work instructions, schedules, contacts, systems and tools, acceptance records and correspondence about defects or success are more informative.

From due diligence to completion

Four review steps for external personnel in the target business

Each step answers a separate transaction question. Classification, records and the acquisition agreement are brought together.

  1. 01
    Before signing
    Inventory

    Inventory every assignment

    Agreements, personnel, hirers and assignment periods are brought together in one schedule.

    Record personnel providers, other providers, hirers, affected personnel, locations, activities and the start and end of each assignment. Link each case to the agreement and the actual organisation.

    Legal points of reference: section 3 AÜG, section 13 AÜG

  2. 02
    Classification
    AÜG review

    Distinguish works contract and labour hire

    The four statutory indicators in section 4 AÜG are compared with the actual workflow.

    Document the work result, materials and tools, integration, line and technical supervision and responsibility for success. Several labour-hire indicators require a reassessment of the contractual label.

    Legal points of reference: section 4 AÜG

  3. 03
    Data room
    Evidence review

    Review records and notices

    Person, hirer and assignment data are reconciled with service notes and notices.

    Review the provider's ongoing records, copies of service notes and notices. Also check the five-year retention period after the last entry.

    Legal points of reference: section 13(1) to (3) AÜG

  4. 04
    Signing and completion
    Acquisition agreement

    Govern open issues contractually

    Missing records, remediation, cooperation and classification deviations receive clear responsibilities.

    Assign each finding to a pre-signing measure, a condition to completion or post-completion support. Cross-border assignments need a separate review of hirer and provider duties.

    Legal points of reference: section 13(8) AÜG

Which provider records belong in the data room

Section 13(1) AÜG requires the provider to keep ongoing records from the start of its labour-hire activity. For each person, section 13(2) names the first and last name, social insurance number, date of birth, sex, nationality and whether the person is classified as manual staff or office staff.

The records must also show the name and address of each hirer, its VAT identification number and its statutory representative body or relevant professional association. The start and end of every assignment must be traceable for each person. In the data room, these details should be reconciled with the agreement, service note, notice and payroll evidence.

The section 13(2) records and copies of service notes under section 11(4) and notices under section 12 must be retained until five years after the last entry. The transaction review should therefore test whether historical records for completed assignments are still complete and readable.

Document cross-border assignments separately

Section 13(8) AÜG contains a specific record-keeping duty for the hirer of personnel supplied from the EEA. The hirer must keep the person data and the start and end of each assignment and record the relevant providers, in particular their names and seats.

These records and copies of notices under section 12(3) must also be retained for five years after the last entry. The annual data transmission uses a separate allocation: instead of the hirer's professional affiliation and the federal state of its business, the state in which the provider has its seat is stated. The data room should make the cross-border structure visible.

This rule does not answer every issue raised by international personnel deployment. Before signing, record the provider's seat, the hirer, the employment state, the assignment period and the available notices separately. Other employment, wage and social-security requirements remain outside this AÜG record review.

Data room review fields

Which evidence the acquirer should reconcile

Each field answers a different question. Together they show whether agreement, practice and records match.

AÜG review fields in a business acquisition
Review field Core question Data-room evidence
Roles Who is provider and who is hirer? Who commits and who uses the personnel? Agreement, group structure, assignment schedule
Work result Is there an attributable work result? Which distinct product or result is owed? Service description, acceptance, defect correspondence
Organisation Who directs the daily work? Are there integration and line or technical supervision? Schedule, instructions, contacts
Records Can persons and periods be traced? Are the start and end of every assignment recorded? Section 13 records, service notes, notices
EEA assignment Is a cross-border assignment involved? Are provider and seat and hirer data recorded? EEA records, state, seat evidence, notices
Transaction What must happen before signing or completion? Which documents and cooperation remain open? Open-issues list, agreement, conditions to completion

The table supports due diligence. It does not replace a case-specific review of the actual organisation and other employment-law duties.

Clarify labour hire before signing: A different classification can change the risk assessment, data-room requirements and acquisition mechanics. Reconcile the assignment schedule with the actual organisation and assign each open record to a clear step before completion. Book an initial consultation (180 euro).

Translate AÜG findings into signing and completion steps

The acquisition agreement should reflect the reviewed assignments in a schedule or a linked data-room list. For each entry, bring together provider, hirer, person, activity, start and end, contractual basis, actual organisation and open records. This shows which facts come from the target and which the acquirer still needs to verify.

Where evidence is missing, govern delivery, remediation and cooperation precisely. Depending on the finding, the appropriate response may be a pre-signing measure, a condition to completion or support after completion. The clause should describe the finding and its consequence rather than relying on a broad heading.

For EEA assignments, include the hirer perspective. The acquirer must check whether the target keeps its own records and whether providers can be identified by name, seat and assignment data. Include the result in the risk list and the responsibility matrix for the period up to completion.

Frequently asked questions on labour hire in an acquisition

The answers provide initial orientation. The actual organisation, documents and assignment remain decisive.

FAQ

Works contract or labour hire

Does calling an agreement a works contract decide the classification? +

No. Section 4 AÜG focuses on the true economic substance. Review the attributable work result, materials and tools, integration into the business, line and technical supervision and responsibility for the success of the work.

What must the provider records contain? +

Section 13(2) AÜG names personal data and the type of employment, the hirer data including its VAT identification number and representative body and the start and end of each assignment. Reconcile those records with the other transaction documents.

How long must the records be retained? +

Records under section 13(2) AÜG and copies of service notes and notices must be retained until five years after the last entry. The data room review should also test the historical completeness of completed assignments.

What additional issue arises for personnel supplied from the EEA? +

Under section 13(8) AÜG, the hirer must keep records of the personnel and assignment periods and identify the providers, in particular their names and seats. Retention and the further data duties should be reconciled with the available notices.

Topics
Labour hireAÜGWorks contractDue diligenceCompletion

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