Sometimes they ask for a wage slip mate & sometimes they don’t. Also try to get a letter from your company with an agreement stating that you’re permitted to work remotely (this helps)
In the case of an overstay, gates will remain closed and you’ll be directed to an IO. No biggie for overstay really, if few days - but as you said you don’t plan to overstay. Best to keep clear immigration record for future entries etc. 🙏