The Butler County Commissioners will vote Wednesday to accept new agreements with two of the county’s bargaining units.

They will vote for arbitration awards for the 67 court-appointed clerical and technical employees, and the 66 court-related clerical and technical workers. Both units are represented by the Service Employees International Union, Local 668.

The four-year contracts, which are retroactive to Aug. 1, include a 2.5 percent pay increase for this year and 3 percent increases for 2016, 2017 and 2018. The contracts will expire Dec. 31, 2018.

Because the decisions went to an arbitrator, the commissioners will have to accept them.

“The law is clear on that,” said county solicitor Mike English.

Once these agreements are approved, six of the county’s eight bargaining units will have new contracts. All county union contracts expired Dec. 31.

The county has not yet come to an agreement with the SEIU unit representing the county’s 115 administrative clerical and technical workers and the 36 employees represented by the Probation Officers Association.

In April, the county’s four detectives — represented by Butler County FOP Lodge 107 — agreed on a three-year contract. In May, 55 administrative professional employees represented by SEIU, Local 668 approved a four-year contract.

In August, the county accepted arbitration awards for the 98 corrections officers at the county prison and for the 10 assistant district attorneys and assistant public defenders. Corrections officers are represented by the American Federation of State County and Municipal Employees and the ADAs and APDs are represented by the United Steelworkers of America.