I agree with Moon - Tami, your boss is very proactive. I wouldn't think they'd allow a boss to go that far here? I think if I started testing my staff with my glucometer I'd be in trouble... we have harrassment laws. You must have been Ok with your boss doing that to you? If a staff member asks me to use my glucometer to check their BGLs, I will allow that (I have with a colleague in the past).... but I would never go up to a staff member and say tell them I need to check their BGLs because I've noticed they have been going to toilet and drinking more.... they'd have me up for discrimination and/or harrassment. I could nicely ask them if they're Ok. If I think it's affecting their performance and I have to put them on a support plan... I can book them to see a medical officer as part of that process, but they can still refuse to go there... but at the end of the day it's their health and their choice. If bad performance continues and they refuse to make any effort to improve their performance I would consider suggesting a more suitable job within the organisation if I'm aware of one... or last resort a demotion or termination of employment. I would never go and test someone basically.... we have very strict anti-discrimination laws which includes 'disabilities'. Under those laws diabetics are classed as 'disabled'... yes, it's true (although I didn't like the idea of been labelled as 'disabled' and I recently got offered to attend a disabilities forum as part of negotiations for our new workplace agreement this year).
But for you at least you now know what you're dealing with... that's a positive.