1. personal delivery of the copy against a receipt;

2. personal delivery of the copy against a receipt

3. 2. personal delivery of the copy against a receipt;

4. Service is to be effected by posting the process or document in a prepaid registered envelope, or by personal delivery.

5. Controverts the referenced employee's right to workers' compensation upon the following grounds: I hereby certify that a copy of this notice has been served, by mail or personal delivery, to the above named employee at the most current address which can be determined by diligent inquiry or to his or her attorney, if represented.