The National Labor Relations Board has filed a pending administrative action against Bridgewater Associates, the world’s biggest hedge fund firm, charging that the company’s confidentiality agreements are too restrictive. The NLRB alleges the firm “has been interfering with, restraining and coercing” employees from exercising their rights, according to The New York Times. The firm’s employment contracts include a mandatory confidentiality agreement, a non-disparagement clause and a compulsory…