The Ohio Department of Job and Family Services said Friday that the state's labor market weakened, led by losses in service-providing industries.

The figures were released on the same day that President Barack Obama is scheduled to visit Ohio to talk about rebuilding the economy.

The number of workers unemployed in Ohio last month was 641,000, up from 624,000 in November.

Officials say the number of Ohioans out of work has risen by 196,000 in the last 12 months, from 445,000 in December 2008. The state's jobless rate a year ago was 7.4 percent.

The U.S. unemployment rate for December was 10.0 percent, unchanged from November.