Formulate a smoking policy for your office which is fair to both smokers and nonsmokers. Write a 40-50 word memo informing all staff of the policy.
TO: All Employees
FROM: CEO, Willan Smith
SUBJECT: NEW SMOKING POLICY
For all the employees, especially smokers, plz be aware that our company's new smoking policy has been formulated as follow: A main smoking area's going to be restricted before Next MONDAY, anyone is not allowed to smoker in non-smoking zone even in the washing room.
Plz target the smoking and non-smoking area and stick to the company's new policy.
时间不确切，最好是 from next Monday. Before 这个期限是什么时候?如果不能给出确切信息，就不要说，还不如换成具体的吸烟区域更好: be restricted to the room next to the toilet.
添加：to ensure that it is fair to all of you.
To: All staff
Everybody know that smoking is dangerous for your health. And the The studies didn't just point to the ill effects of smoking on those who smoke--non-smokers, too.  Notice is hereby given that the smoking area is located in the special corner of the first floor of this building. This come into force on September 15th.
Memo 的主要作用就是提醒同事们注意事项，这和吸烟有多有害不相干，去掉。改为：to assure working environment
to : all the staff
from : jeremy
subjuect : new somking policy
do you have a feeling that our office is surrounding by smog all the day, so we will implemented a new policy for somking ,from next week ,we will open an area for the smoking ,and other area is rescricting to smoke ,also there is a punishment when we find you smoke in these area 
we will implement a
to: All Staff
from: Susuan Wu
To creat a nonsmoking office room, we hope that smoking is forbidden in the work office from Sep.1st. Would you please enjoy your smoking in the Launch by closing the office door.
Thank you for your coperation.
To: All staff
From: Sarah Buffay
As you all know, there is an increasing dispute about smoking in the office. Now we'd like to formulate a policy both fair to smokers and nonsmokers: The vacant room 408 will be opened as "Smoking Room" from tomorrow. All smokers may go there within the time limitation from 9:00a.m. to 4:00p.m. But smokers are not allowed to smoke outside this room.
If you have any problems, please contact me. 
这是信件的结尾，不是memo的，直接用 thank you 就可以。