The union had sued to stop the change.

When the strike failed, the union sued the employers, also without success.

So when does the teacher's union or someone else sue him?

Two unions have sued the city on this issue.

But, the next day, a group of parents and teachers' unions sued, arguing that the law was unconstitutional.

The union sued the county in federal court once the policy took effect in February.

A union or local government body can also sue on behalf of employees.

The following year, the union sued again over the same issue, but this time the court sided with the city.

The sanitation workers' union sued to bar those women from being hired, contending that they were not strong enough to do the job.

The union advised the teachers to sign the contract and then sued the district.