What percentage of employees must sign union authorization cards for a union to request recognition from an organization?

In order for a union to request recognition from an organization, a minimum of 30% of employees must sign union authorization cards. This percentage is crucial as it demonstrates a significant level of support among employees for the union's representation. The threshold is established by the National Labor Relations Act (NLRA), which allows a union to file for recognition once it can show that at least 30% of the workforce has expressed the desire to be represented by the union.

This requirement ensures that there is a foundational group within the organization advocating for union representation, which is essential for the legitimacy of the union's request. If the percentage were lower, the union might not represent the interests of a substantial portion of the workforce, potentially leading to fragmentation and conflict within the organization.

The other percentages mentioned are not accurate for initiating the recognition process under the NLRA, as they do not meet the legal threshold required for a union to act on behalf of the employees.