WBFO-FM 88.7 | By Marian Hetherly Published November 9, 2021 at 6:10 AM EST Catholic Health System / After three days of voting, more than 2,500 Communications Workers of America employees at Mercy, Kenmore Mercy and Sisters St. Joseph hospitals have approved six new four-year union contracts. This officially ends the strike at Mercy in South Buffalo, where nurses, service, clerical and technical staff have been on strike since Oct. 1. The biggest issue on the bargaining table has been staffing.