text: U.S. EMBASSY IN ATHENS CLOSED ON LABOUR DAY , SEP 2 . ATHENS 1996-08-29 The U.S. embassy in Athens , the consulates general in Athens and Thessaloniki and all U.S. government offices in Greece will be closed on Monday , September 2 in observance of Labour Day , a U.S. national holiday , the embassy said . -- George Georgiopoulos , Athens Newsroom +301 3311812-4