Why do you think we have a unit on Labor Unions in Economics class?

Unions provide workers with better benefits, including paid leave and health care. Union workers are more likely to be covered by employer-provided health insurance. ... Union employers pay 86% of workers' health care premiums while nonunion employers pay 79% of their workers' health care premiums.

Explanation:

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.