Hi,
Other work is described as follows : "Used to capture data specific to steady-state work performed by CA Clarity PPM resources. Other work can represent overhead tasks such as management and maintenance. Use this investment type to catalogue the investments that are incurring costs and benefits and are not projects, assets, applications, ideas, services, or products but that need to be included in your investment portfolio".
If you have the PPM Essentials accelerator installed then this object should include teams for "Holiday", "Personal Leave" and "Vacation Time". If you assign resources to these teams then they should be able to record time to these activities on their time sheets. Having a suitable input type code to go with this will help with the tracking of the finances.
With in a project if you want to differentiate between billable and non-billable you can use input type code.
Regards
Chandrani