Leoni Grant Thornton & Partners

Excellence in Labor Consultancy since 1979

We are a firm specialized in labor consultancy, personnel management, and the development of digital HR solutions. Founded as Studio Leoni, we have been supporting Italian and international companies for decades with passion, expertise, and vision. Since 2025, we operate under the name Leoni Grant Thornton & Partners, a new identity that strengthens our path within the Grant Thornton network, one of the leading international players in consultancy.

We stand out for the high quality of our service, attention to detail, and constant focus on technological innovation. We are certified Zucchetti partners and support companies in every sector – from sports to entertainment, and up to multinational organizations – with customized digital solutions and always up-to-date regulatory support.

Experience, quality, technology. We share your vision.

Our services

Payroll

Complete and customized payroll service, integrated with digital solutions and compliant with Italian and international regulations.

Labor consultancy

We help Italian and international companies manage all aspects of their workforce.

HR & Payroll Advisory Services

We review contracts, payroll, and risks for extraordinary transactions and we assess tax, labor, and safety risks in outsourcing contracts.

Extended services

We provide integrated digital tools to simplify HR management.

HR Infinity Portal

The HR Infinity Portal is Zucchetti’s platform designed to centralize communication between the company and its employees.