Thursday Transport Minister Michalis Liapis holds a press conference on the draft law for the establishment and operation of trading centers. Left Coalition Synaspismos Chairman Alekos Alavanos to meet with employees of Olympic Airways at Athens International Airport. Hellenic Association of Amateur Athletics (SEGAS) holds an event to award the best track athletes. At noon at the Hellenic Olympic Committee in Halandri. Finance Minister Giorgos Alogoskoufis to meet with MPs from the prefecture of Epirus. Turkish Parliament’s EU Harmonization Committee, headed by former foreign minister Yasar Yakis, holds a press conference at 3 p.m. at the Turkish Embassy. Pensioners in Thessaloniki demonstrate at 10 a.m. at the Labor Center over low pension increases. GSEE holds general meeting on «Work Academy Launch,» noon at the GSEE amphitheater, 69 Patission. South African President Thabo Mbeki pays an official visit to Athens. To Saturday. PASOK leader George Papandreou visits Stockholm to attend European Socialists meeting. National federation of state hospital employees (POEDHN) and the National First Aid Center (EKAB) stage a five-hour work stoppage from 10 a.m. to 3 p.m. demanding more pay and staff. At 10.30 a.m., protesters will stage a demonstration at Mavili Square and then march to the Health Ministry. The BSEC Hellenic Business Forum and the OECD Development Center host a regional forum on «Private Sector Development in the Black Sea Region: Priorities,» at the Holiday Inn hotel in Thessaloniki. Deputy Foreign Minister Evripidis Stylianidis will make the opening address. To tomorrow. Tel. 210.366.8854 or log on to www.afea.gr. Friday The Constantine Karamanlis Institute for Democracy hosts a conference on «Constitutions in Greek Society and the Role of Politics Today,» at 6.30 p.m. at the Old Parliament. Greek and foreign unionists and non-government organizations to meet at Athens University to discuss issues related to the Fourth European Social Forum to be held in spring 2006 in Athens. The Bank of Greece hosts a conference in memory of Xenofontas Zolotas, former government of the bank, to be held at 10.30 a.m. at the bank’s headquarters at 21 El. Venizelou. Bank of Greece Governor Nicholas Garganas will make the opening speech. President of the European Central Bank Jean-Claude Trichet will speak on «Monetary Policy and Private Expectations.» The international agriculture exhibition «Agriculture 2005» opens its doors at the EKEP expo center at the 12th km of the Athens-Lamia National Road in Metamorphosis. To Monday. Tel. 210.756.8888 or log on to www.agrorama.com. Sunday The Bar Associations of Athens, Piraeus and Thessaloniki to elect new boards. To Monday.