Your boss or her boss may call you into the office, close the door, and say, “What can we do to keep you here?” This would be the counteroffer and I recommend you reject any counteroffers as invalid. You’re not leaving for more money—you’re leaving for something better.
Back when I was a cubicle dweller, a coworker named Kevin, whom I highly respected, resigned and gave our employer a two-week notice. Two weeks went by. The following Monday, our boss called a staff meeting and in walked Kevin. Our boss started the meeting with, “I’m sure you have heard that Kevin here resigned. OK, let’s start the meeting.”
My impression of Kevin never recovered from that. What did the firm do to keep him onboard? Did they offer more money, more vacation time, a signing bonus? Nobody knew. One thing was for sure: Kevin’s loyalty was suspect. Everyone knew that if the firm ever wanted to fire Kevin and replace him with somebody cheaper, they could justify it by citing his disloyalty. Do not put yourself in the position Kevin did. When you announce you are leaving the company, you really are leaving and not entertaining any offers to stay.
Your final two weeks of employment are not the time for anything casual or untoward. That includes going to the bar with your coworkers and discussing how everybody hates their jobs. News of people quitting or getting fired travels quickly. You have to leave on a positive note and give your coworkers a professional final impression of you. From Escape the Cubicle