‍Mysainsburys is an employee portal created so that Sainsbury's staff members may access online resources like paystubs, work schedules, payroll, and HR-related services at mysainsbury.co.uk. The second-biggest grocery store chain in the UK is called Sainsbury's, or J Sainbury plc. The company was founded in 1869 by John James Sainsbury and began operations with a store on London's Drury Lane.