IATSE has filed unfair labor practice charges against the Kennedy Center after the layoff of two departments of workers ahead of the closure of the arts institution.  The union for theatrical stage employees says that the Kennedy Center is violating its union contract by laying off or terminating all workers in its Instant Charge and Group Sales and Subscription departments, effective April 27, rather than meeting its legal obligation to bargain over the impact of the temporary closure. Management also confirmed it will not replace the workers, according to IATSE. “This is not a normal closure-related layoff,” said International IATSE President Matthew D. Loeb. “The Kennedy Center appears to be using a temporary closure as cover to permanently eliminate union jobs in violation of its contract and federal labor law.” A spokesperson for the Kennedy Center did not immediately respond to a request for comment. The charges were filed with the National Labor Relations Board.…