In the article, the author presents the results of empirical studies on perception of the phenomenon of grey market at enterprises providing the tourist services: hotels, travel agencies and restaurants. The grey market is defined as an area of economic activities whose income gained from the activities, which are not forbidden by the law, is completely or partly hidden from relevant bodies of the state administration. The studies have shown that the size of grey economy in the market for tourist services is relatively small. Its manifestations are related, first of all, to manpower management by enterprises. From the macroeconomic point of view, the basic effect of existence of the grey market is a better financial position of the entities operating therein as compared with the enterprises operating pursuant to the legal rules. The surveyed related their greater expectations in the struggle against the grey market to enhancement of control over entrepreneurs and, then, to amendments of regulations and to reduction of tax burdens.