Douglas County commissioners on Wednesday approved a 4.5 percent raise for union members of the Sheriff’s Department. Deputies, dispatchers and records clerks will receive a 2.5 percent raise retroactive to July 1, 2012, and another 2 percent increase beginning July 1. The 125 union members have been working without a contract. The previous two-year agreement, which provided union members with a 5.5 percent salary increase, wasn’t approved until April 2012 and expired three months later Previously, a one-year contact imposed a wage freeze. Commissioners also agreed to provide an additional $40 per month in the first year and another $35 …