https://www.legis.state.pa.us/cfdocs/legis/LI/uconsCheck.cfm?txtType=HTM&yr=1970&sessInd=0&smthLwInd=0&act=195&chpt=9&link_id=0&can_id=54f5927b379949084c3e447eef192a89&source=email-bargaining-update-our-economic-proposals-2&email_referrer=&email_subject=whats-in-a-contract-grievance-and-arbitration