Mission Health System will cut costs by $42 million next year under a reorganization plan that could mean layoffs. It plans to grow revenue by $10 million during the same fiscal year, which starts Oct. 1. The not-for-profit company — Western North Carolina's largest employer with 10,600 workers — has yet to determine how many jobs might be lost. Mission Health predicts a $500 million decrease in payments over the next decade as more people get medical care outside of hospitals and reimbursements from Medicare and Medicaid decline. Seventy-five percent of Mission's patients are covered by Medicare and Medicaid.