Thresholds is a 501(c)(3) nonprofit organization founded in 1959 serving persons with mental illnesses and substance abuse problems in Illinois. [1] Thresholds has over 1,000 employees offering support programs in Chicago, its suburbs, and nine surrounding counties. [2] [3] Thresholds is the largest community-based mental healthcare provider in Illinois, [4] providing services to more than 7,000 people with mental health and substance use disorders every year. [5] Its main office is in Ravenswood, Chicago. As of 2023, the organization has 10 consecutive years named to the Chicago Tribune Top Workplaces. [6] [7] [8]