When a union bargains successfully with employers, what happens to quantity of labour supplied and demanded in that industry?

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When a union bargains successfully with employers, they are able to negotiate higher wages and better working conditions for their members. This leads to an increase in the cost of labor for employers, which in turn causes the quantity of labor demanded to decrease. On the other hand, since wages have increased, the quantity of labor supplied increases as more people are willing to work in that industry. Therefore, the quantity of labor supplied increases and the quantity of labor demanded decreases.

When a Union Bargains Successfully with Employers, What Happens to Quantity