ATHENS, Greece (AP) -- Greek guards say scores of archaeological sites and museums across the country will be shut down over weekends beginning at Christmas as they strike to protest the lack of extra weekend pay.

The guards' association says in a statement Thursday it has not been paid extra for working weekend shifts for over two months.

It says workers will keep the weekend strike going until the ministries of culture and finance solve the problem.

Greece has been kept solvent only through international bailouts since May 2010.