May 29, 2014 in Astana, President of Belarus Alexander Lukashenko, President of Kazakhstan Nursultan Nazarbayev and Russian President Vladimir Putin signed the Treaty on the establishment of the Eurasian Economic Union. In the following, the Republic of Armenia and the Kyrgyz Republic joined the Treaty on the Eurasian Economic Union. According to Article 1 of the Treaty on the Eurasian Economic Union (hereinafter referred to as the Union), within the framework of the Union, freedom of movement of goods, services, capital and labor, coordinated or unified policy in the sectors of the economy is ensured. One of the principles of the functioning of the Union is observance of a market economy and fair competition. In this article we will consider the actions of the Commission in identifying signs of violation of the General rules of competition in respect of Caterpillar - one of the leading world corporations for the production of the biggest machinery in the world with headquarters in the United States that were identified in assessing the state of competition on cross-border trade of equipment used in the mining industry between the member States of the Eurasian.