Or: works contract or work contract

In addition to the references to Introduction to Greek Law
See: https://bit.ly/2MyIku3
In the next page of that book (not shown in Google Books), under "D. Contract for Work": By a contract for work, the contractor is bound to produce the work promised, and the customer is bound to pay the remuneration agreed upon (μίσθωση έργου).

ΣΥΜΒΑΣΕΙΣ ΜΙΣΘΩΣΗΣ ΕΡΓΟΥ
http://tiger.cti.gr/el/docs/odigos/367-2018-1/file

Το έκτακτο προσωπικό απασχολείται στα έργα με σύμβαση εργασίας ορισμένου χρόνου ή με σύμβαση μίσθωσης έργου. […]
Η σύμβαση εργασίας ορισμένου χρόνου είναι η σύμβαση που συνάπτεται με τους δικαιούχους σύμφωνα με τις διατάξεις της κείμενης νομοθεσίας όπως ισχύει κάθε φορά (του άρθρου 93 του ν. 4310/2014, όπως αντικαταστάθηκε με την παράγραφο 1 του άρθρου 24 του ν. 4386/2016 καθώς και με το v.4485/2017).
Η σύμβαση μίσθωσης έργου είναι η σύμβαση με την οποία ανατίθεται η εκτέλεση ενός έργου σε φυσικά πρόσωπα, διεπόμενη από τα άρθρα 681 επ. ΑΚ και τηρώντας όπου αυτό απαιτείται σύμφωνα με τις κείμενες διατάξεις και τις διατυπώσεις δημοσιότητας.

Good not for the Czechs only:
https://www.sciencedirect.com/science/article/pii/S221256711...

For the Greek context:

Additionally, in the case of services provided, under a works contract, article 681 of the Civil Code provides that the supplier of services must deliver works with the qualities agreed on without minor or substantial defects that destroy its fitness for its ordinary or stipulated use. If the supplier breaches its obligation, the counterparty may request the removal of defects or the proportional reduction of the remuneration, or rescind the contract or request compensation for non-performance, depending on the circumstances (articles 688–690 of the Civil Code).
https://www.ballas-pelecanos.com/up/files/Getting-the-Deal-T...

contract for work
https://books.google.gr/books?id=2E8gAwAAQBAJ&pg=PA420&lpg=P...

Namely according to article 681 of the Civil code by a work contract the contractor has the obligation to perform the work and the employer to pay the agreed compensation
https://www.eui.eu/Documents/DepartmentsCentres/Law/Research...

VI. CONTRACT FOR WORK
1. The Concept and Features of the Contract for Work Contract for work is the contract where the one contracting party (contractor) undertakes the obligation to carry out a work and the other party (master of work) is obliged to pay the agreed fee (Art. 681 CC). By work we mean the result of human activity which may and may not be material.
https://www.academia.edu/6852425/BASIC_CONCEPTS_OF_GREEK_CIV...

https://www.google.com/search?client=firefox-b-d&q=greek civ...




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Note added at 2 hrs (2020-06-06 11:22:31 GMT)
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681 "σύμβαση μίσθωσης έργου"
https://www.google.com/search?client=firefox-b-d&q=681 "σύμ...