Problem Definition

Confluence does not provide a functionality which could allow attachments and child pages to inherit labels from its parent page. It could be useful for building RSS and Recently-Updated feeds.
Currently only one Marketplace plugin provides solution for labels inherited during the page creation but it does not maintain them: if the page is moved the labels will not be updated accordingly.

Suggested Solution

1. It would be good to expand the present labeling system with:
   • Parent-child relations
   • Synonyms
   • Inheritance
2. And to develop a toolkit to maintain the existing labels.

Workaround

1. Currently the only possible way to inherit the labels from the parent page is to utilize the existing paid add-on from the Marketplace: Labeler - not available at this point.
2. You can create a page template with in a space add label to it. Use this template to create a new page and that will have label added to it.
3. Other that that I could explore an app where in child pages will inherit the labels from its parent pages and more.

• Magic Labels for Confluence
  You can use this add-in for free upto 10 users only and you can install it for free for first 30 days