MADRID, Sept 5 (Reuters) - Just 9 percent of Spaniards definitely plan to take part in a general strike against wage and pension cuts planned for Sept. 29, down from 15 percent in a July poll, a poll showed on Sunday.
The percentage who believe the strike is justified grew to 58 percent of those polled by Metroscopia for El Pais newspaper, up from 51 percent in July. But those who said a strike is not appropriate grew by 15 percentage points to 56 percent.
Prime Minister Jose Luis Rodriguez Zapatero has approved 15 billion euros ($20 billion) of spending cuts and carried out a reform of labour laws making it easier to hire and fire as part of measures aimed at renewing faith in Spain's economy.
Spain's two biggest unions, traditional supporters of the unpopular ruling Socialist party, have called for a general strike in September against austerity measures, in coordination with other unions in Europe.
The opposition centre-right Popular Party increased its lead over the Socialist PSOE in approval ratings to 8.9 percentage points, the poll showed.