⚖️ What Counts as Additional Work?

Under Czech Civil Code (§ 2586/2), extra work must:

• be requested by the client,

• go beyond the original scope,

• and increase cost or workload.

Without agreement, the developer isn’t obliged to perform it – especially not for free.

📌 What If It’s Unclear?

Without detailed specs, it’s hard to judge whether a request:

• was “implicitly included”,

• or is a new requirement.

So, always define:

• original scope in writing,

• change approval process,

• price per hour or per change.

🧠 Best Practice for Contracts

Include:

• change logs or protocols,

• pre-agreed hourly rate for extras,

• clear approval rules.

Otherwise, a client’s “tiny change” can cost 40 dev hours.

🔧 What If the Developer Proposes a Change?

They must:

• inform the client,

• and get written approval.

Without this, the final product might be legally defective.

🧱 Real Case

A client ordered Excel export. After delivery, he complained about missing PDF export.
PDF wasn’t in the contract.
Developer refused.
The client had no claim – the PDF wasn’t agreed.