It is my sincere adivse dont issue warning letter without giving show cause notice. Initially you have to issue a show cause notice asking him the reasons and why necessary action is not required to be initiated against him. After received the reply to show cause notie you issue warning letter. If you follow this it is legally valid.
It is reported/alleged against you that, you _______________, Emp. No _________ Designation _________ found ( Give reason).
Following are the complaints against you.
This act of your as mentioned above constitutes misconduct as per the certified Standing Orders of the Company.
Therefore you are hereby required to give your written explanation as to why suitable action should not be taken against you for the said misconduct.
Your written explanation should reach us within 48 hrs of receipt of this notice.
Failing of which will be understood that you have no explanation to offer and action deemed fit shall be taken against you.
9th August 2011 From India, Madras