Importance of written form for fixed-term contracts
According to Section 14 (4) of the Part-Time and Fixed-Term Employment Act (TzBfG), the fixed-term nature of an employment contract is subject to a strict written form requirement. This means that both contracting parties must sign in person and clearly sign. A mere initial or initial is considered insufficient according to established case law. If the form is not observed, the fixed-term nature is invalid, and the employment relationship is deemed to be permanent.
Key points:
- Section 14 para. 4 TzBfG regulates the written form.
- Handwritten signature instead of initials or hand signals.
- impact: Invalid fixed-term contract leads to an indefinite employment relationship.
Relevant case law of the Federal Labor Court
The Federal Labor Court (BAG) has ruled several times that the employer's full name is required. One ruling (e.g. BAG, August 20, 2014 – 7 AZR 924/12) confirms that a signed document with clear identification of both parties is the minimum requirement.
practical tip: If only an initial ("xy") or an unclear signature is present, this may invalidate the fixed-term contract. Employees should pay close attention to the type of employer's signature when concluding a contract.
Consequences of an ineffective limitation
If the limitation is ineffective due to lack of written form, automatically a permanent employment contract. This means for employees:
- No automatic contract termination: The employment relationship continues after the agreed fixed-term date.
- protection against dismissal: Employees enjoy the rights of a permanent employment contract after 6 months if the company employs at least 10 full-time employees
- Deadline for complaintsIf you want to have the invalidity declared by a court, you must do so within three weeks after the planned end of the contract, legal action can be taken (see Section 17 S. 1 TzBfG).
Common sources of error in fixed-term employment law
- Signature: The employer only uses an abbreviation and not a legible “First Name Last Name”.
- Date of signing: In the case of fixed-term contracts, the contract must be signed in writing before the start of employment – later corrections are usually not possible.
- Multiple extensionsNote: Every extension agreement requires a valid signature from both parties. Even with multiple, properly valid fixed-term agreements, a missing signature on the last extension can render the entire agreement invalid.
Tips for employers
- Full signatureAlways sign with your full name, as is customary in business transactions.
- Preservation of evidence: Keep an original copy with both sides' signatures in the personnel file.
- Correct dating: All fixed-term employment documents should clearly indicate the date of signature and the agreed start date of employment.
- Legal checkIf you are unsure, it is worth consulting a lawyer to avoid possible formal errors.
Conclusion and recommendations for action
An ineffective limitation by a insufficient signature can have significant effects and usually leads to a permanent employment relationshipEmployers are therefore well advised to take the issue of written form seriously and adhere to every detail precisely. Employees should carefully check whether all formal requirements are met in fixed-term contracts in order to protect their rights in case of doubt.
contact and consulting
As Specialist lawyer for labor law I have many years of experience in fixed-term employment law. I would be happy to advise you on drafting or reviewing employment contracts and assist you in enforcing your rights in disputes.

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