(Reuters) -Healthcare conglomerate Kaiser Permanente said on Tuesday that it is facing a labor strike called by the Alliance of Health Care Unions over wages, but has plans in place to continue operations without interruption.

The strike that began earlier in the day is scheduled to end at 7 a.m. on October 19, Kaiser Permanente said.

The 31,000 members of United Nurses Associations of California/Union of Health Care Professionals are among the 46,000 members of the Alliance of Health Care Unions, which will strike Kaiser mainly on the West Coast in California, Hawaii, and Oregon, the union said in a statement on Monday.

Kaiser Permanente said it has been negotiation in good faith with the unions on a new national agreement since May. The company said it offered to increase wages by 21.

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