(KWWL) -- Employees at some MercyOne locations across Iowa will be required to get the COVID-19 vaccine following an announcement from their parent company, Trinity Health. Employees at MercyOne locations in Dubuque, Dyersville, New Hampton, Mason City, Clinton, Sioux City, and Primghar will be required to provide proof of vaccination by September 21. There are exemptions for religious or health reasons, which must be formally requested, documented, and approved. Employees who don't meet criteria for exemption and fail to show proof of vaccination face termination. "Safety is one of our Core Values. We feel it is important that we take every step available to us to stop the spread and protect those around us-especially the most vulnerable in our communities who cannot be vaccinated including young children and the more than 10 million people who are immunocompromised," Trinity Health President and CEO Mike Slubowski said. "Over the last year, Trinity Health has counted our own colleagues and patients in the too-high coronavirus death toll. Now that we have a proven way to prevent COVID-19 deaths, we are not hesitating to do our part."