In my place, even if you are sick you have to speak to them on the phone. You can email text etc. But you still have to physically speak to your line manager even if you're unwell.
I just don't understand why. Or if it's an emergency, I suppose if you are in hospital and physically unable to speak in extreme circumstances that's different.
Just don't understand this level of distrust that employers have, does anybody else have this in their contract?