Mike, re. work situation - my hubby (whose job is to know this stuff) -says:-
If you can show you have a 'disability' - you may need doctor and/or lawyer to verify, then you can ask your employer for 'a resonable adjustment' to your working arrangements. The employer HAS to consider if a reasonable adjustment can be made. Depends on the business.
If yes, then fine. BUT if they decide a suitable adjustment cannot be made for you then they could decide to make you redundant.
So if you think it's worth it you can possibly sort the work situation/boss out.
My husband wears a Helly lifa zip neck T next to his skin with a medium weight merino layer on top. He is a VERY sweaty individual. I know he's tried various other options, including the HH prowool, merino only etc. etc.
In the colder conditions both my kids prefer 2 layers of merino, thin then mid weight on top. I wear a Buffalo shirt with a varying (-dependent on weather) merino baselayer. I run quite 'cold'.
So I guess you'll just have to experiment to see what suits you.