Is the process by which a group of workers legally take away a union's right to represent them. disqualification decertification impeachment disenfranchisement

Decertification is the process by which a group of workers legally take away a union's right to represent them. |It is a procedure under which  employees of a cooperation can disassociate themselves from a specific union.
In opposite, the certification process formalizes the collective bargaining relationship. 

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