I work for a small IT company. They've just introduced a new rule where we have to sign in and out every time we come in / leave the office (incl. lunch times, etc). There is a 'signing in' book in reception. Up until now we've just used a key fob to get in and out (we'll still do that as well). There were 2 doors we could use to get in and out, so they're changing one to an emergency exit. They say this is for 'health and safety'. The guys in the office reckon it's more likely to be to keep tabs on everyone! Is this usual? Do other's companies do this too? I've not come across it before, except for visitors.