OHL ŽS, a.s. is a construction company specializing in multiple areas of business, and ranks among the five most important construction companies in the Czech Republic. According to an evaluation by the Association of Entrepreneurs in the Construction Industry (Svaz podnikatelů ve stavebnictví) it places fifth in the following categories: ‘construction production companies – by volume of revenues’, ‘construction production companies – by assets’ and ‘construction production companies – by number of employees’.