The process to change varies. If the employee uses Colleague the process requires a reboot of Colleague. This rename step would then be done on a Thursday evening to match the normal maintenance reboot performed on Friday mornings. These steps are usually run by a member of SYSADMIN and a member of the Colleague team. They coordinate this with the user in question. In addition if the user has cashier abilities they should have closed all of their sessions before the name change. Once the name has been changed they will not be able to get back into any of these sessions under the new name.
When HR receives notice of a name change for an employee (Colleague user or otherwise) they will notify IT.
IT name change team will
If the renamed user is a ImageNow user the name should be changed in WebNow