1. Early Works Authorization: Optional section authorizing the subcontractor to commence certain preliminary works before the final subcontract is executed

2. Exclusivity: Optional provision preventing the subcontractor from engaging with other contractors for the same scope during the LOI period

3. Break Fee: Optional clause specifying compensation if either party withdraws from negotiations without justified cause

4. Local Content Commitment: Required for oil and gas projects, outlining commitment to Nigerian content requirements

5. Advance Payment: Optional section detailing any advance payment terms if work is to commence under the LOI

6. HSE Requirements: Optional section for high-risk works requiring immediate compliance with Health, Safety and Environmental standards

1. Schedule 1 - Preliminary Scope of Work: Detailed description of the intended works and deliverables

2. Schedule 2 - Preliminary Commercial Terms: Indicative pricing, payment terms, and commercial conditions

3. Schedule 3 - Key Personnel: List of key personnel from both parties involved in the project

4. Appendix A - Required Documentation: List of documents required from the subcontractor (certificates, permits, insurances)

5. Appendix B - Timeline: Preliminary project timeline and key milestones

6. Appendix C - Form of Non-Disclosure Agreement: If confidentiality is critical and requires separate execution