But he said the union would cooperate.

The two unions will cooperate on organizing and collective bargaining.

The company said that if the unions did not cooperate, it would start selling assets, overhaul the airline, and lay off workers.

The union closely cooperates with Ukrainian Baptists in the diaspora.

"It became clear early on that the unions would only cooperate if we limited access to the archive," Ms. Corwin said.

And the unions, which have fought such pressure since the industry was deregulated in 1978, are not cooperating.

The teachers' union has cooperated in the efforts to reorganize schools as long as jobs are preserved.

He is also trying to make friendly overtures to the city's unions, while holding out the threat of layoffs if the unions do not cooperate.

Mr. Bronner said the airline would prefer that the unions cooperate in its efforts to cut costs.

Within many firms trade unions cooperate between themselves.