Established through the Riverboat Gambling Act, the Illinois Gaming Board is responsible for the administration and regulation of the tax collection system for riverboat casino gambling in Illinois. It is a division of the Illinois Department of Revenue. The board performs audit, legal, enforcement, investigative and financial analysis services to ensure the integrity of gambling activities. It has a work force of more than 120 staff members. The Illinois Gaming Board provides regulatory oversight of casino operators and issues licenses to suppliers and employees of riverboat gambling operations. The board administers a statewide voluntary self-exclusion program for problem gamblers that allows persons who have determined they are problem gamblers to self-exclude themselves from all casinos in Illinois.