The Mount Greylock Regional School may be new, but it's still facing an old problem: labor strife.

The Berkshire Eagle reports amid ongoing contract negotiations, teachers have decided to conduct a job action, known as work-to-rule, that curtails their work on extracurricular activities.

The dispute stems from the merger of the Mount Greylock Regional School district with the school districts from both elementary schools and a district set up strictly to administer shared services between the two elementary schools. That merger prompted the need to negotiate a new contract.

But union members said the School Committee has declined to honor pay raises promised under the existing contracts while the new contract is negotiated.

Union officers released a flyer explaining their decision to take a work-to-rule stance.