Do non-workers take up a system licence?

Summary:

Trying to establish if non-workers take up a system licence?

Content (please ensure you mask any confidential information):

We are thinking of starting to use Non-Worker person type in our environment but I'm trying to establish if a non-worker is considered to be a 'User' in the eyes of Oracle and therefore take up a licence

Version (include the version you are using, if applicable):

n/a

Code Snippet (add any code snippets that support your topic, if applicable):