<prompt> Human: I worked for a division in a large multinational in the oil gas space from April 2014 until May 2015 when I was laid off due to market conditions. I started working for my current employer in June, but was unhappy and so I continued to look. I found that there was an opening at another division of the original conglomerate and i interviewed for it this week.I received a verbal and written offer today for the position at 1pm for 62k and 2 weeks vacation. By 2:30pm I replied negotiating for 65K and 3 weeks vacation. At 4:30pm I received a call from the HR contact who extended the offer. We discussed the terms I asked for and she said she would get back to me next week. At 5pm I went ahead and submitted my two week notice at my current position.At 5:45pm I received an email from the HR contact rescinding the offer. WTF happened?TLDR: Laid off, Started working, interviewed and received offer from different division of original company, put in two weeks notice, offer rescinded after negotiating for 5 more.Edit: My performance at the previous division was stellar and the North American GM was instrumental in getting me an interview and as a reference. For clarification, I did receive a formal offer letter with the initial contact today.Edit: Edit: Its obvious I jumped the gun on putting in two weeks, I know that. I was planning on accepting the offer whether or not they negotiated. A simple sorry, there is no room for negotiation would have sufficed. Also, it is extremely rare that offers are rescinded. I am just in shock that it happened to me. Also, in reading most articles, it states that negotiating a salary is best done right after an offer is made. That is what I did.  <response>: Ouch, looks like you jumped the gun. NEVER put in notice until you have accepted a final offer in writing!! What was the rush? MOST companies are willing to negotiate on offers, it used to be totally expected. But my experiences latelyIm also in OG have shown that some companies now throw out blanket offers and you have to either accept or not. Im shocked they actually retracted the original offer instead of just saying no to your counter though, that sucks.It sounds like either you messed up big time with whatever you said negotiating, they had another candidate lined up in case you even tried to negotiate, or something unexpected came up on their end. Its hard to say with such little details.Try to find a copy of Negotiating Your Salary: How to Make 1000 a Minute. That might give you a better idea if you did anything wrong and hopefully this wont happen again. 