Sixteen months after voting to form a labor union, about 370 nurses and technical employees at Delaware County Memorial Hospital have reached a tentative agreement on their first contract with Prospect Medical Holdings Inc., which bought Crozer-Keystone Health System last year in a deal valued at $300 million.

The Pennsylvania Association of Staff Nurses & Allied Professionals, which represents the Delaware County Memorial staff, said Wednesday that the deal would be put up for a vote Thursday. PASNAP said the tentative agreement "gives nurses and techs a voice in patient-care issues, allows for transparency in staffing, and protects worker standards."

The nurses went on strike for two days in March and were locked out for an additional three days by Prospect, which is majority-owned by private-equity firm Leonard Green & Partners.