The Histadrut, Israel's largest union, has sent a serious warning letting to business leader Rami Levy, demanding that he stop threatening the workers at Bikurei Hashkema, the company that provides fruits and vegetables to his supermarket chain.

The Histadrut says that the letter is in response to threats made by Levy towards the company's administration about their 180 employees. The employees have been on strike for the past two days about their desire to regulate the chain's business conditions and to ensure their job security.