Mgr. ANNA VEJMELKOVÁ, advokát

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Retention in Contracts for Work – When It Makes Sense and What Risks It Brings

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The work is done. The contractor fulfilled all obligations. But instead of getting paid, the client says:
“We’re keeping part of the payment just in case something goes wrong.”

Retention.
For some, it’s a quality guarantee. For others, it’s a dangerous loophole that allows delayed or denied payment.

Let’s explore when retention is a useful tool, and when it can become a serious legal risk.

What is retention?

Retention is part of the price withheld by the client after completion of the work. It serves as a financial guarantee for defects that may show later or for obligations like defect removal.

In practice, it’s usually 5–10% of the contract price, released after a fixed period or once defects are remedied.

Is retention legal?

Czech law doesn’t specifically regulate retention, but it can be contractually agreed.

⚠️ If retention is:

  • vague,

  • excessive,

  • unilateral,

  • or without clear release terms,

…it may be unenforceable, contrary to good morals, or even abusive.

When does it make sense?

  • Large-scale or technical works, where defects often appear later.

  • When the contractor doesn’t offer clear guarantees or support.

Risks of retention:

  • Legal uncertainty if not properly worded.

  • Client may delay or refuse payment unfairly.

  • Contractor is financially exposed for months after delivery.

Best practices:

  • Set fixed percentage and amount.

  • Clearly define release conditions.

  • Make sure it’s not a penalty – just postponed payment.

Need help drafting fair retention terms in your contract?
🔹 I’ll design clear and enforceable conditions
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Contact a legal professional – I specialize in contract law.
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