Madrid subway workers are staging a three-day strike to protest wage cuts ordered by the Spanish government as part of its bid to trim an oversized budget deficit.
Madrid Metro company said the strike is affecting 50% of services.
On average some 2.5 million people use the Madrid subway system daily but with school and university students on vacation, the strike is having a reduced impact.
The stoppage was called to protest an average five percent wage cut for public service workers that is due to come into effect next month.
The wage cuts are part of an austerity plan aimed at reducing a deficit of 11.2% of GDP in 2009 to 3% by 2013.