Home » Business and Workforce Development » Illinois Small Business Development Center » Resources Resources FEIN registration at the IRS website or call 800-829-4933/ 618-632-2567 (local Mt. Vernon office) Register Trademarks & Patents Starting a Business & Record Keeping Business Use of Your Home Payroll Withholding Employment and Labor Laws Labor Laws Illinois Resources License / Permits Search Illinois Department of Revenue Illinois Unemployment Insurance Law Illinois Payroll Withholding New Hire Reporting Registration, Licenses, & Permits Department of Financial & Professional Regulations