Only you can decide if you should let your employer know that you have cancer.
You may worry about a possible dismissal, failure to be hired, demotion, denial of promotion, denial of benefits, undesirable transfer, and being treated unfairly by co-workers. Depending on your situation, you may want to seek advice from a professional counsellor who understands employment rights for people living with cancer.
Consider telling your employer if:
You may need time off for treatments or because you don't feel well
You're eligible to take a leave of absence (i.e. short or long-term disability)
You're applying for a new position
You may consider not telling your employer if:
You're afraid you won't get a raise or promotion
You don't want people to feel sorry for you
You're afraid of losing your job
What you should know
Learn more about communicating with your work on Cancer and Work's website