(Portland, OR) -- Nurses who work for Providence Health & Services want the Multnomah County District Attorney's Office to launch an independent investigation into the company's payroll system. The Oregon Nurses Associations says that since July 2022, Providence has underpaid thousands of health care workers by using a faulty payroll system. It caused nurses to be underpaid for hours, overtime, and differential. In some cases, nurses and health care workers didn't receive a paycheck despite working over 40 hours in a week. Providence says most of the issues have been resolved. They added a "fast pay" program to have a check issued within 24 hours when a payment was missed. Providence says the new system will make it easier for caregivers to get information and manage changes.