City is under the same silly rule.This approach buy the USPS is basically just to protect there Cash Cow portion of the business, it has no beneficial rewards for those of us performing the task. Their confidence in us to perform all required daily activities is lacking.
Its a Bean Counters approach to being efficient, making us do more work (because we are salary) on their time table to insure timely execution of the money making product.
We don't do it in our office, we refuse, and it still gets delivered timely, daily.