City commissioners at their weekly meeting unanimously approved new four-year contracts with the city’s police and fire unions.

The new contracts call for a 1 percent general wage adjustment in 2012, 1.5 percent in 2013 and 2014 and 1 percent in 2015 for most employees of the unions, although police detectives will not be eligible for the wage adjustment until 2015.

Eligible members of the two groups also will be eligible for merit increases that would boost their wages by either 2.5 percent or 5 percent, depending on their performance evaluations.

Tuesday’s approval concludes negotiations with the two groups that began in April.