Holding that plaintiff cannot escape responsibility for paying his union dues on the theory that once he executed the check-off documents his obligations shifted to the union
In NLRB v. Canton Sign Co., 457 F.2d 832 (6th Cir. 1972), neither the pre- nor post-merger unions had ever been certified as the bargaining agent for Canton Sign Co.'s employees, and there was no evidence that any of these employees had ever chosen to become a member of either the pre- or post-merger unions.