1. By secret ballot. This is the most common way to vote on a union contract. Each employee casts their vote in a private ballot box, and the results are tallied by a neutral third party.
2. By voice vote. This is a less common way to vote on a union contract. In a voice vote, employees raise their hands to indicate their vote. The results are tallied by the union representative or the employer, and the side with the most votes wins.