Please explain ? If you think about it, if someone goes away from their desk for 5mins (conservative estimate) 10 times a day (given not everyone goes that often) that is almost 10% of their day "wasted".
It's also relevant to more than just productivity, e.g. a receptionist leaving the phones unattended.
It's also relevant to more than just productivity, e.g. a receptionist leaving the phones unattended.