Oklahoma Notice of Hearing / Affidavit of Service is a legal document used to notify a party of a court hearing in Oklahoma. It is typically used in civil and family court matters. The Notice of Hearing includes the date, time and location of the hearing as well as the purpose of the hearing and any other relevant information. The Affidavit of Service is used to confirm that the Notice of Hearing was properly served to the other party. It is signed by the person who served the Notice of Hearing, and is filed with the court as proof that the other party was properly notified of the hearing. There are two types of Oklahoma Notice of Hearing / Affidavit of Service: 1. Personal Service — This type of Notice of Hearing / Affidavit of Service requires the notice to be personally served to the other party or their representative by an authorized person. 2. Certified Mail Service — This type of Notice of Hearing / Affidavit of Service requires the notice to be sent to the other party or their representative by certified mail. The Affidavit of Service must include the date and time that the notice was mailed.