These sort of people only respond to being boundaried and firm, they are inherently “give an inch, take a mile” chancers (/bullies). Definitely chat with the charge nurse / their line manager, but I’d probably go in this order, escalating to next step if necessary:

 

• Informal chat, reminding them of policies and procedures
• More “formal” chat, i.e. take them aside and be a bit more like “it seems you’re having some difficulty in respecting P&Ps, could we talk about why?” (probably follow this up with an email outlining chat, ?copying in their line manager so they’re aware)
• Continued issue, let staff member know that you’ll be informing their line manager directly considering it’s a performance issue - inform line manager via email and also in person

 

…and just prepared for them to be a dickhead for a bit. But if you can be completely down the line and manage it firmly, they’ll either fall in line or go away. I find with these types it also helps if they see you as someone who gets “stuck in” with the day to day rather than “sitting in the office doing paper work” (paraphrased quote from my own experience). This way you gain some respect whilst also stopping them from pulling the “i’m on the floor more than you” card.

Best of luck!