Final answer:
Employees join unions for protection, contractual obligations, and increased bargaining power.
Explanation:
Employees become members of unions for various reasons:
- Protection and advocacy: Unions offer support for laws that benefit workers, such as work conditions and job security.
- Contractual obligations: Some jobs require union membership, ensuring workers' rights and benefits.
- Bargaining power: Unions historically aim for higher wages and improved working conditions for their members.
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