One way in which the value of justice or fairness manifests itself in private law is through a broad interpretation of fundamental rights. The key question addressed in the presentation were: How to reconcile contractual fairness and contractual freedom (that is a manifestation of the most fundamental principle of private law - the autonomy of the will)? In order to provide answer to this question, several examples of decision-making in the Czech Republic will be illustrated as well as the fact how the new Czech Civil Code of 2012 addressed this issue.