Connecticut Health Care Associates has reached a tentative contract agreement with Danbury and New Milford hospitals, just over a year after welcoming the hospitals’ employees into the union. “This is the furthest we’ve gotten in the process,” said Jason Riccio, the staff representative at CHCA and the lead negotiator. The agreement was reached just days before a rally the union had staged for Saturday, in which they planned to demand a final contract and respect on the job.