A. A Wage Above the Market Level
Explanation
With no union the labor market settles at E, a wage We and Qe jobs. A union that can credibly threaten a strike can negotiate a higher wage Wu for its members.
At that higher wage firms want fewer workers, Qd, while more people want the jobs, Qs. The gap between them is an excess supply of labor: workers who would like union jobs at that wage but cannot get one. Union members who keep their jobs are better off, which is the union's point of view; the cost falls on the workers who are not hired. The slider sets how far above the market wage the union pushes.
Union Wage