The subject of the article is collective rights of temporary workers. The nature of a temporary employment relationship, in which the employer is the temporary work agency, but the work is performed under the direction of the user undertaking, has an impact on this sphere of employee's rights. Because of the recent amendment to the provisions of the Act on Trade Unions the following areas was analyzed (i) associating in trade union (ii) the problem of including this group of employees by the provisions of collective agreements, (iii) issues of collective disputes.