20+ Rescind Job Offer Salary Negotiation Limited Job Offer. Workers are employed at will and can be terminated at any time, for nearly any reason. Review the laws in your area before proceeding.
But again, the job offer is for a junior level professor and it's highly unlikely that they would be able to grant a request even if they wanted to.
The two main reasons a job offer will be rescinded are due to new information being surfaced about the candidate or the company's financial situation has deteriorated to a point where they are no longer able to accommodate an additional salary obligation. If you don't feel the pay aligns with your education, career level, skillset and experience, you may choose to negotiate for more money. This is counter to the entire idea of negotiation (and the interview process in general, for that matter). Rescinding a job offer is typically done in extreme cases.