Yes. In case the user has hired a vendor or contractor to perform a project to work on your behalf, then they can enter their hours within the time slips window. This is applicable when the user has set up vendors as contractors. As with the employees, the user needs to make sure that they have set up your service activities before you can start recording the time spent by contractors. The time slip feature allows the user to accomplish the following tasks:  To be able to record the time that the contractor spends on an activity on the time slip.  To be able to add the time slip amounts on to a customer invoice.  To be able to add the time slip amounts on to a vendor invoice.