Samsung Everland…said Monday that it has fired a worker for leaking sensitive corporate information less than a week after employees set up a trade union. The company, which is an affiliate of Samsung Group…said Cho Jang-hee, the vice chairman of the union, has been dismissed for wrongful conduct…Cho is one of four workers of the amusement park arm of Samsung Group who played a leading role in establishing the union. Workers applied for the trade union last Wednesday with the country's labor ministry, the first such move within the business group in more than three decades. Samsung has adhered to a "no labor union policy" as part of its business culture and actively discourages workers from taking such steps… Cho said he will contest his dismissal and asked for a review of the decision. The conglomerate added that another union activist is being checked for possible wrongdoings.