While Costco operates an employee website as of 2015, access to many features is restricted to employees with valid login credentials. No login is required to access general Costco benefits content that covers topics such as health insurance and retirement plans.
Login credentials for the Costco employee website are established using My Costco Account. Employees who wish to create a login need to know their employee id number, along with either the store location where they're employed or the month and year of their most recent hire date. Once logged in, employees have access to a variety of personal and financial information, including digital copies of tax forms and pay stubs.