Depends, for companies on a Pro plan or below they have to request it and slack will only approve said request if required to by law or other legal requirement (or consent of user in question)

Above that plan, only Workspace Owner admins specifically can access it. A workspace owner is the one who originally signed up for the plan and users directly designated to be a Workspace Owner from the original one.

Frankly, if it’s something that can get you in trouble DON’T use a work thing for it whatsoever! Be it slack, your work computer or work email.

If you want to talk about such things with a coworker, ask for their damn phone number or find them on SM, seriously, keep it off work stuff. There’s always a way to access even supposedly private stuff if done on a work device or service.

Source: IT head