An Extension Letter is a crucial document used in Pakistani business and legal practice to formally extend the duration of existing contractual relationships. This document type is particularly relevant when parties wish to continue their business relationship under the same terms and conditions as their original agreement, but with an adjusted timeline. The Extension Letter must comply with Pakistani contract law requirements and should clearly reference the original agreement, specify the new duration, and confirm the continuation of other terms. It's commonly used in various situations such as lease extensions, service agreement continuations, or employment contract extensions. The document's format and content should align with local legal requirements while maintaining clarity and precision in expressing the parties' intentions to extend their contractual relationship.

1. Letter Header: Company letterhead, date, reference number, and recipient's address details

2. Subject Line: Clear indication that this is an Extension Letter with reference to the original agreement

3. Opening Salutation: Formal greeting to the recipient

4. Reference to Original Agreement: Clear identification of the original agreement including its date, parties, and subject matter

5. Extension Statement: Clear and unambiguous statement of the extension being made

6. Extended Term: Specific details of the new term or duration

7. Confirmation of Other Terms: Statement confirming all other terms and conditions remain unchanged

8. Closing: Request for acknowledgment, signature blocks, and formal closing