The Work license is designed for a user who needs to contribute to a project by completing tasks and issues, as well as log hours or update custom data.
The maximum permissions that a Work license user can get on a project is Contribute. To understand the access of a Contributor to a project, please refer to "Project Permissions".
A Work license user can manage tasks and issues on a project, just not the whole project.
This is why system administrators will see an Edit (lim) option in the access level for the Work license.
To understand the access to all objects of a Work license user, please refer to "Access Levels by License Type".