ATHENS (Reuters) - Greek Prime Minister George Papandreou won a parliamentary majority on Thursday in favor of an implementation law for a five-year austerity plan required under an EU/IMF bailout package.

With voting still continuing, Papandreou's Socialist government had already reached the 151 votes required in the 300-seat chamber to secure both overall passage of the legislation and the separate articles.

(Reporting by Harry Papachristou; Editing by James Mackenzie)