Answer:
Dear members of the office, I have the pleasure to inform you that our office building will now be applying a new cellphone policy. If you are currently employed at Owen's Oatmeal Office, you must obey the office's policies as to not be terminated. failure to follow these standards, reconsideration of your employment contract will be review.
NEW POLICY:
Cellphone usage of any kind is only permitted during employees' office-given breaks. Failure to do so will lead to a reconsideration of your employment contract.
Sincerely, Email Communications.