In the field of anticompetitive agreements and concerted practices Article 5 of Competition Act prohibits as null and void agreements between undertakings, decisions by associations of undertakings and concerted practices of undertakings (agreements), which have as their object or effect the prevention, restriction or distortion of competition on the territory of the Republic of Slovenia with some actions stated as examples of prohibition.

This prohibition applies in particular to agreements that (i) directly or indirectly fix purchase or selling prices, or other trading conditions; (ii) limit or control production, markets, technical progress or investment; (iii) apply dissimilar conditions to comparable transactions with other trading parties, thereby placing them at a competitive disadvantage; (iv) make the conclusion of contracts subject to acceptance by the other parties of supplementary obligations which, by their nature or according to commercial usage, have no connection with the subject of their contracts; (v) share a market or sources of supply. 

The listed examples of illegal agreements are substantially the same as in Article 101 TFEU; the same applies for the possibility and conditions for exemptions in line with Article 101(3) TFEU.