This first edition (version 1.0) of the performance work statement (PWS) handbook contains a summary of how to develop a PWS. Contingency contracting officers (KOs) frequently perform this task in a deployed environment. Information from numerous sources within the defense acquisition community, hard lessons from countless requiring activities (units), and contingency KOs in deployed environments contributed to this handbook. The authors designed this handbook for users operating in a deployed environment based on realities they do not routinely find in continental U.S. operations. The design of the handbook allows you to pick it up and begin reading at any point, much like a reference book, so you may want to start with a topic that interests you. Use the table of contents to identify general areas of interest, find what you need, place the handbook in your Army combat uniform cargo pocket, and tackle a statement of work or PWS-related task with confidence.