The aim of this article is to establish the impact of the minimum wage on the labour market in Poland. The contents of the article are divided into three parts. The first part is devoted to the methods of studying the effects of minimum wage on employment and unemployment. The second part concerns the most important empirical estimates of the minimum wage effects on the labour market, which has been carried out in United States. The third part of the article presents the results of our research of the minimum wage effects on labour market in Poland. Our study shows that employment and unemployment in Poland was not affected by the minimum wage.