Members of two union federations in Turkey have gone on a one-day strike over the forced evictions of protesters from Istanbul's Gezi Park, the focal point of fierce anti-government demonstrations that swept much of the country over the past two weeks.
Labour groups representing doctors, engineers and dentists are also said to have joined the strike on Monday. The striking groups represent about 800,000 workers.
The Turkish Interior Minister Muammer Guler said the strike was "illegal" and warned of police action.