Refus de proposition d'embauche (à l'employeur)

Dear [Mr or Mrs or Sirs], Furthering our meeting, I thank you very much for offering me the post of [fonction] at [société] or I thank you very much for your letter of [date], offering me the post of [fonction] at [société]. I have studied your proposition with much consideration and realize how exciting and prestigious such a position can be. Nevertheless, I have decided not to accept this offer because [motifs]. I hope you will appreciate the circumstances. I regret not to be in position to work at [société] and thank you again for your offer Yours sincerely [votre nom] [votre fonction]