The state oil company PDVSA played a key role in the December 2002 – February 2003 national strike which sought President Chávez' resignation. Managers and skilled highly paid technicians of PDVSA shut down the plants and left their posts, and by some reports sabotaged equipment, and petroleum production and refining by PDVSA almost ceased. Activities eventually were slowly restarted by returning and substitute oil workers. As a result of the strike, around 40% of the company's workforce (around 18,000 workers) were dismissed for "dereliction of duty" during the strike.