Union Certification Election Employee Representative Election Certification NLRB Representation Certification Employee Representative Certification A formal process by which the regulator (e.g., National Labor Relations Board (NLRB)) certifies a union or other employee organization as the official representative of a group of employees, typically after an election. Certification occurs when the union wins the majority of votes cast in a secret-ballot election overseen by the regulator (e.g., NLRB).