Discover the differences between MSAs and SOWs. Learn when to use each to reduce legal risks and boost business clarity.Our attorneys at Wilson Legal Group have over 20 years of protecting and defending businesses, ideas, and personal interests in MSA and SOW disputes. Explore our Master Services Agreement, outlining the terms and conditions that govern our services. The SOW authorizes Agency to commence performing any Services as of the Effective Date. SOW shall provide description of the goods ("Products") and Professional Services. Learn the differences and similarities between a Master Service Agreement and a Statement of Work in this detailed analysis of MSA vs SOW. It is an agreement between two parties or more that establishes the terms and conditions of a business relationship or an ongoing project. ("OSV"), a Delaware corporation with offices at 9001 Cypress Waters Blvd, Dallas, TX 75019,. A statement of work, or SOW, seeks to define liabilities, responsibilities, and work agreements between two parties, usually between a client and parties.