Final answer:
An authorization card indicates an employee's willingness to be represented by a labor union in collective bargaining.
Step-by-step explanation:
An authorization card indicates an employee is willing to be represented by a labor union in the collective bargaining process. It is a document signed by an employee to show their support for a union and their desire to be represented by that union. By signing the card, the employee gives authorization to the union to negotiate on their behalf.