Roughly 3,500 protestors turned up for the May 1 Labour Day rally against the Memorandum organised by Greece's largest trade union organisations - the General Confederation of Employees of Greece (GSEE) and the civil servants' union ADEDY. The rally began at around 11:00 a.m. in Syntagma Square.

There had earlier been another rally organised by the Communist-affiliated PAME trade union faction, which had begun at Syntagma Square at 10:00 a.m.

A separate rally and marched to Parliament was also organised by the party ANTARSYA, individual unions and organisations of the non-Parliamentary Left.