But the unions have so far resisted any efforts to tamper with their contracts.
The union has resisted the formula as a salary cap.
I don't think the union is resisting new technologies.
Until Wednesday, the union had always resisted testing for any drugs, including steroids and cocaine.
But when asked what would happen if the union resisted changes, he said, "I don't think that's an option.
Teachers' unions, of course, have sometimes resisted such data collection because it might lead to changes in pay formulas.
But the unions have so far resisted any more concessions.
Obviously, it's a plan that management would like and the union would resist.
The city has proposed a similar cash payment for teachers, but the union is resisting it, officials on both sides said.
The teachers' union resisted efforts to shake up the schools.