have been with my employer for over 1 year. I have been ill the past few weeks and had to take personal illness days. Which are part of my benefit package. Every morning I emailed my boss to advise of my intent to use a personal illness day as I am not well.  A few days later, I received a terminal letter via courier. The letter did not specify a reason. I emailed HR to question my termination.. this is their response...  "Lastly, the business reason for your termination of employment was due to the ongoing concerns regarding your lack of regular attendance, excessive absences and your failure to follow the absence notification requirements - all of which were negatively impacting the business in terms of scheduling and workflow.‎" In addition, my doctor has signed off on putting me on Short Term Disability.  Can they do this?