Many companies, especially publicly traded ones, have social media policies now. Some go as far as to require you to provide all of your usernames.

If I wear my work badge outside of work, and someone makes a complaint about my actions or behavior while I'm off the clock, corporate security similarly investigates it.

This is nothing new. This is also why you'll see, with higher profile persons, "These views reflect my own and not that of my employer" or similar verbiage on their social media and blog bios.

https://www.americanbar.org/groups/business_law/publications...

PDF WARNING https://www.americanbar.org/content/dam/aba/publications/lit...