Zellis Shipped Payroll and HR Answers and Actions Inside Microsoft Copilot via MCP, Authenticating Every Call Against ZellisONE Permissions
PR Newswire UK (Zellis release, single source)·low signal
Zellis, which pays one in seven people in the UK and Ireland, launched an assistant that runs inside Microsoft Copilot rather than its own UI. Employees ask about take-home pay, managers pull overtime data, and HR checks right-to-work status. Leave approvals and pay adjustments also go through the same MCP connection, and each request authenticates against existing ZellisONE permissions and audit. A payroll incumbent choosing Copilot as its front end is a concession that the chat surface belongs to the horizontal assistant.