BOISE, Idaho (AP) — The Idaho Department of Labor says the state's seasonally adjusted level of unemployment hit its highest rate in three years in May.

The seasonally adjusted unemployment level jumped to 3.6 percent last month, from 3.1 percent in April.

The agency says the one-month increase resulted in the highest seasonally adjusted unemployment rate since November 2005.

The department says increases in the cost of food and gas have forced more people into the job market to look for additional work to supplement their household incomes.

The number of unemployed workers increased to 26,900 last month, from 23,000 unemployed workers in April.