A labor group said it has issued a strike notice to Kaiser Permanente that could affect about 235 nurses, physical therapists and other health care professionals statewide, including about 20 workers on Maui.

The United Nurses Associations of California and Hawaii/Union of Health Care Professionals said the strike could begin as early as Monday. Under federal law, labor unions are required to provide written notice at least 10 days before striking at a health care institution.

The union said the strike notice does not apply to workers at Maui Memorial Medical Center, which has a new contract, but does apply to Kaiser clinics and medical centers statewide, including Maui.

The group said it represents about 31,000 Kaiser frontline registered nurses and health professionals at more than two dozen hospitals and clinics across California and Hawaii.

According to union representatives, the strike notice follows the release of a report detailing Kaiser’s financial reserves and investment activity.

On its website, Kaiser Permanente said it has been bargaining with the Alliance of Health Care Unions for more than seven months — the longest national bargaining process in its history — in an effort to reach agreement on new national and local contracts.

Kaiser said it paused national bargaining on Dec. 14 but has proposed a solution to move negotiations forward. The organization said local bargaining has continued despite the pause at the national level.

“We have resolved all local issues at 29 of 53 local union tables to date. We believe this is momentum we can all build on,” Kaiser said in a statement.

According to Kaiser, several local bargaining units remained listed as “open” as of Jan. 20, including medical technicians, health care workers, clerks and technicians. Certified registered nurse anesthetists were listed as “paused.”

Matt Piskura, a Hawaii physical therapist representing the labor group in national bargaining, said Kaiser has proposed takeaways affecting bargaining units in their first contracts, including nurse anesthetists.

“That doesn’t sit right with us,” Piskura said.

Piskura said another issue involves patient access and staffing levels.

“So we are needing to stand together to advocate for greater staffing, which also helps retention,” he said. “You know you can only do so much. So those are some of the bigger issues.”