As cbg and Betty point out, it may be worth your while to consult an employment law attorney.
Here is a KS case I found online concerning detrimental reliance or promissory estoppel. Although it is a US 10th circuit opinion, it was a state court case and was Petitioned for removal to federal court, and granted, so don't let that confuse you.
In part:
A.
Plaintiff argues that the district court erred by granting judgment as a matter of law on her promissory estoppel claim. At the close of Plaintiff's case, Defendant moved for judgment as a matter of law, arguing that Plaintiff had not presented any evidence of detrimental reliance damages under Kansas law. In order to recover under a theory of promissory estoppel, Plaintiff must establish that (1) Defendant intended or should have known that Plaintiff would act to her detriment in reliance upon Defendant's promise of continued employment, and (2) Plaintiff did indeed rely on that promise to her detriment. See Patrons Mutual Ins. Ass'n v. Union Gas System, Inc., 830 P.2d 35, 39 (Kan. 1992).
http://ca10.washburnlaw.edu/cases/1998/12/97-3255.htm

