Final answer:
To initiate an election for unionization in the United States, typically more than 50 percent of employees must sign in favor. However, requirements can vary. In Canada, approximately 60 percent of worker signatures are sufficient to form a union.
Step-by-step explanation:
For an election to take place regarding the formation of a union in the United States, a specific percentage of employees must signal their interest. While the question does not specify a percentage directly linked to initiating an election for a union in the US, it's common for a majority to be required to move forward with unionization efforts. Typically, this would mean more than 50 percent of employees would need to sign in support of holding an election. However, labor laws can be complex, and the exact requirements may vary depending on the jurisdiction and the specific circumstances.
In Canada, for comparison, a union can be formed when about 60 percent of workers sign an official card indicating their desire to unionize. This difference underscores the variation in labor laws and procedures between different countries.