Public transport and services will grind to a halt tomorrow as labor unions and other professional sectors stage a 24-hour strike to protest proposed pension reforms. There will be no flights leaving or arriving at Athens International Airport as air-traffic controllers join the action. Bus, trolley and suburban railway services will be suspended until midnight. The Athens-Piraeus electric railway (ISAP) will run between 10 a.m. and 3 p.m. only and the tram from 9.30 a.m. to 4 p.m. A demonstration, planned for 11 a.m. at the Pedion tou Areos park in central Athens, is expected to cause traffic problems. Banks will be closed, as will most public services. Courts will not be operating as lawyers and court staff conclude a 48-hour strike that began today. Hospitals and ambulance services will be operating with skeleton staff. And there will be no lessons at schools and universities as teachers join the action. Journalists will also be on strike, resulting in a broadcast news blackout tomorrow and no newspapers on Thursday.