The hypocrisy is wonderful. Although we have this "rule" in place, there is also the capability procedure, which is followed after so many days of sick (depending on whether you work full tiem or part time)...it doesn't matter whether you have D&V, meningitis or have been hit by a car. If you exceed the threshold, you go under formal monitoring and could eventually lose your job through it..
For this reason, I am rarely off sick - I have to be very, very ill to even consider it. In our department, it is preferable to remain at home if you have D&V, as people don't want to be infected with germs. I wouldn't think of staying at home for a cold or anything minor...fortunately, these days, I am rarely ill. Having DS has strengthened my immune system, and although I catch colds from him, they rarely amount to anything.
We are reminded annually about the Winter Vomiting Bug and if we have it, to please stay at home and not risk infecting everyone else. I think also there is the point here that staff absence costs the NHS billions of pounds a year in lost productivity, and there has historically been a lot of people taking the mickey and "pulling sickies" from work when they just want a day at home in bed. So people coming in to work sick spreads these bugs about and suddenly it's not just one person sick, it's a whole team.
I understand the policy and why they have to have it in place, but there seems to be no discretion for managers. If you're sick, you shouldn't be at work, the manager has seen you and knows you're sick, but then suddenly you're back at work and told you will be formally monitored for 3 months and this will go in your HR files.
The goal posts seem to change with the weather, which really doesn't help anyone either.