If you're in the US, I think the ADA means your employer needs to accommodate you in this regard. (To be clear, I'm not suggesting you get "all lawyered up" an

If you're in the US, I think the ADA means your employer needs to accommodate you in this regard. (To be clear, I'm not suggesting you get "all lawyered up" and obnoxious. Just ask for a meeting with HR, to discuss ways to make it work for both of you. Pointing out that you use a medical device should help get across the point that this isn't a frivolous request to doze.)