Exhibit 10.8B AMENDMENT NO. 1 WHEREAS, Barrett Resources Corporation (the "Corporation") and William J. Barrett have executed a Severance Protection Agreement dated February 6, 1998 (the "Agreement"); WHEREAS, at that time of the execution of the Agreement it was assumed that Mr. Barrett would retire on January 31, 1999; WHEREAS, at the request of the Board of Directors, Mr. Barrett has agreed to remain as an employee of the Corporation through March 31, 2000; and WHEREAS, in light of the foregoing the parties desire to extend the term of the Agreement. NOW, THEREFORE, the Corporation and Mr. Barrett agree as follows: 1. Paragraph 1 of the Agreement is hereby amended by deleting January 31, 1999" and substituting "March 31, 2000". 2. This amendment shall be effective November 19, 1998. ATTEST: BARRETT RESOURCES CORPORATION /s/ Eugene A. Lang, Jr. BY: /s/ A. Ralph Reed Secretary A. Ralph Reed President and Chief Operating Officer WILLIAM J. BARRETT /s/ William J. Barrett