The company is working with PMI Health Group's nurses and occupational health team to manage its staff medical insurance claims and provide expert advice. More than 750 Staples employees are also receiving medical insurance brokered by the group.
David McGlennon, head of HR operations for Staples UK, said: "We have established a strong reputation as a company that invests in its people and this latest move further strengthens our status as an employer of choice.
"The membership of our medical scheme has almost doubled over the last two years and so we wanted a single provider to offer us a co-ordinated service, advising on managing costs and ensuring employees are well supported."
PMI Health Group's employee healthcare advice and claims management service, Managed Care, will now be the first contact for employees making a health insurance claim.
The service is provided by fully qualified nurses who give advice and support on any healthcare related matter via a dedicated helpline.
The company's Consultant Occupational Physicians will also carry out occupational health assessments for Staples, overseeing any management referrals.