The Histadrut on Sunday night convened an emergency meeting over 20 Sonol gas station managers who were allegedly fired as they were seeking to unionize and set up a workers committee. "As far we know the workers who were sent dismissal notices all joined the Histadrut Labor Federation and some are members on the workers committee," said the Histadrut's legal adviser Shay Teken. "This case is a big blow to the freedom to unionize and represents an infringement of the basic rights of the workers." On Monday, the Histadrut will announce if it will take legal or other steps against Sonol management. Over the weekend, Sonol, controlled by the Azrieli Group, maintained that efficiency measures, which were part of an reorganization plan at the gas stations, were the basis for the firing of the 20 gas station managers employed by Sonol subsidiary Spring Motors. At Teken's request, the managers turned up for work at the gas stations on Friday and Sunday despite the dismissal notices, while Sonol cut off their mobile phones. On Wednesday, the Knesset Labor Committee will discuss the issue. Teken sent a letter to Sonol late on Thursday urging it to withdraw the dismissal letters.