Greek civil servants are staging a 24-hour strike against austerity measures and expected job cuts by the country's crisis-plagued government.
Thursday's strike disrupted public services, but airports remain open after air traffic controllers skipped the protest because of travel chaos caused by Iceland's volcanic ash cloud.
Labor unions fear deeper cuts after the Socialist government began talks this week with the International Monetary Fund and the European Union for an expected three-year rescue package aimed at easing the country's acute debt crisis. Protest groups are planning anti-government rallies in Athens Thursday.
Athens continues to face intense market pressure, with the cost of borrowing and insuring against default near record levels.