Niksic (MINA-BUSINESS) - Trade union of the Trebjesa brewery has turned down every single proposal of a collective agreement laid down by the management. "We strongly believe that the behaviour like this puts into question the future of the brewery, its workers and their families," the management said in a statement. The management also invited workers to resume work on May 27, saying that it hoped that the workers would not allow the collapse of Trebjesa.