Final answer:
Labor unions bring change through collective bargaining and strikes.
Explanation:
Labor unions primarily achieve change in the workplace through collective bargaining, which involves negotiation between the union and company management. This process helps in setting terms regarding wages, work conditions, and benefits. Another method is through strikes, where union members stop working to address grievances with the employer. Both of these tactics are essential for unions to advocate for and secure better workplace conditions for their members.
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