Union nurses and technicians on Monday approved a new contract with Lawrence + Memorial Hospital after a labor dispute that led to a lockout last fall. Both parties announced the completed deal, which expires June 30, 2016, after a daylong vote by union members. Terms are retroactive to Nov. 16, 2013. About 800 members of two AFT Connecticut locals held a four-day strike beginning Nov. 27 and were locked out when they tried to return. The hospital ended the lockout Dec. 19. The parties had announced a tentative deal on Friday.