Union nurses at Kaiser Permanente hospitals in Oregon expected some small paycheck errors when the health care system switched its payroll software in February 2021. OFNHP represents nearly 6,500 nurses at Kaiser hospitals in Oregon and Southwest Washington. Those workers started reporting paycheck errors shortly after Kaiser switched its payroll and human resources software to a new program called HRConnect. The Kaiser nurses have reported underpayments, too, but the more common problem seems to be overpayments, Lehan said. A similar law already exists in Washington and has helped some of the Kaiser workers affected by the payroll errors.