I have worked for same employer for 13 years with 22 years of granted service from other municipal work. I have been given a letter that has significantly changed my job duties - diminished significantly to less that half the work. I was told this is working notice at my current salary for 13 months and that the pay will be reduced by 13K at end of 13 month period. I think this is constructive dismissal. I am to sign back a letter in one week. I am not sure if I should take the job offer or seek a severance based on this drastic change of work duties. What advice do you have?