Learn the differences and similarities between a Master Service Agreement and a Statement of Work in this detailed analysis of MSA vs SOW. A statement of work (SOW) is an important document that outlines a project's scope, timeline, and cost between two parties usually a customer and a supplier.MSA stands for Master Service Agreement, while SOW stands for Statement of Work. The idea is that you use one master agreement to establish the legal terms. Discover the differences between MSAs and SOWs. Learn when to use each to reduce legal risks and boost business clarity. Parties ("MSA," and collectively with this SOW the "Agreement"). 2. TERM. Listed in this section should fill out a speaker's form and give it to the City Clerk. Parties ("MSA," and collectively with this SOW the "Agreement"). 7) Library: Linda reported they have been helping people fill out their voter registrations.