Human Resource Services Human Resource Services Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City PAYLOCITY _ 1400 American LaneSchaumburg, IL 60173 (800) 520-2687 Member Since: 2020 Learn More | Visit Site | Show on Map ADP _ 1431 Opus PlDowners Grove, IL 60515 (630) 465-4830 Member Since: 2017 ADP offers the leading technology to business owners of all sizes for payroll, HR solutions, and benefits administration. Learn More | Visit Site | Show on Map If your business isn't here, contact us today to get listed!