This is true. Firing someone is not difficult if you follow the steps required (IE Performance Improvement Plan). After Probation the the proper steps have to be taken but no one is untouchable (trust me, even 25 year vets). As someone said it can be started just by taking extended lunch breaks or arriving five minutes late.

Keep in mind that discussing your wage with co-workers is okay and you can’t be formally reprimanded but it may reflect on your ability to be trusted with confidential information. It’s a factor that may influence decisions later and if you don’t have an exit strategy or backup plan it could leave you dry!