Average Weekly Hours of All Employees: Professional and Business Services in Illinois was 35.90000 Hours per Week in March of 2022, according to the United States Federal Reserve. Historically, Average Weekly Hours of All Employees: Professional and Business Services in Illinois reached a record high of 37.50000 in November of 2020 and a record low of 34.30000 in January of 2007. Trading Economics provides the current actual value, an historical data chart and related indicators for Average Weekly Hours of All Employees: Professional and Business Services in Illinois - last updated from the United States Federal Reserve on March of 2024.