I gave my maid one mth notice and her last day on 6/4. Because I need time to apply new one.My mother or myself will stay at home to incharge or double check. It's okay & under control.
If you are good employer and you know how to handle is no problem. Give her one month notice is okay. I am the boss and management the hold company. Also will gave one month notice for lazy or big mistake staff. But will gave her warning letter and signed by them. So, all are good to working until last day.