1. Temporary agency workers shall count, under conditions established by the Member States, for the purposes of calculating the threshold above which bodies representing workers provided for under Community and national law and collective agreements are to be formed at the temporary-work agency.

2. Member States may provide that, under conditions that they define, temporary agency workers count for the purposes of calculating the threshold above which bodies representing workers provided for by Community and national law and collective agreements are to be formed in the user undertaking, in the same way as if they were workers employed directly for the same period of time by the user undertaking.

3. Those Member States which avail themselves of the option provided for in paragraph 2 shall not be obliged to implement the provisions of paragraph 1.