HR Companies & HR Consultants in Oak Brook, IL

GritHR Solutions is an outsourced human resources firm founded in 2021 and headquartered in Johnson City, Tennessee. It operates mainly as a remote team that supports employers and their workforces across all 50 states, with staff based in cities such as Chicago, Atlanta, Boston, Los Angeles, New Orleans, San Antonio and Richmond. The company also lists two office addresses, one in Los Angeles and one in Oak Brook, Illinois, the latter being its nearest site to the St. Louis area.

Who They Serve

The firm aims at growth-minded owners and leaders who know their own field well but lack in-house HR depth and want an affordable, full-scope alternative to building an internal department. Its site describes work across a range of sectors, including:

• Healthcare organizations
• Law firms
• Information technology companies and managed service providers
• Hospitality businesses such as hotels and restaurants
• Professional services firms
• Staffing agencies
• Manufacturing

Services and Packages

Its flagship offering is managed HR, in which the GritHR team takes over day-to-day people operations so leadership can concentrate on running the business.

The broader catalog covers employee relations and performance review support, compliance work and audits, managed payroll, recruiting and direct hire placement, benefits and COBRA administration, handling of employee leave, internal workplace investigations, administration of workers' compensation claims, policy advisement, setup and management of employee portals and HR platforms, and training and coaching for business leaders.

These capabilities are bundled into named packages, among them HR Base Camp, HR Leap, HR Boost Pro, HR Accelerator Pro, Streamlined HR Pro, Power Pick Pro and Managed Payroll Plus, and recruiting can also be bought on a flat monthly basis.

How They Work

GritHR positions itself as an embedded extension of the client's own staff rather than a detached advisor, and it stresses tailored engagements over standard templates. Pricing is quoted according to the mix of services each employer needs.

The company is also tool-agnostic: rather than forcing a switch, it works within whatever systems a client already runs, and it partners with a long list of HR technology and benefits providers, including Gusto, Rippling, Justworks, Deel, Zenefits, JazzHR, Trainual, Guideline and OneDigital. Prospective clients typically start with a free strategy or discovery call.

Background and Credentials

According to the company, its team brings more than a century of collective HR experience, with particular interest in compliance, benefits, employee relations and project management.

The site displays a Gusto payroll certification and a people advisory certification, several 2023 Clutch recognitions for HR consulting, outsourcing and human resources work (including a Tennessee listing), small business and HR industry awards from 2025 and 2026, and an MSCC membership badge.

It also publishes case studies, a blog, checklists and other free tools, giving buyers a way to review its approach before engaging.