This excerpt taken from the AMGN 10-Q filed Nov 7, 2008.
AMENDMENT AND TERMINATION OF PLAN
8.1 Plan Amendment.
8.2 Companys Right to Terminate. Although the Company anticipates that it will continue the Plan for an indefinite period of time, there is no guarantee that the Company will continue the Plan or will not terminate the Plan at any time in the future. Accordingly, by action of its Board of Directors or the Committee, the Company reserves the right to discontinue its sponsorship of the Plan and to terminate the Plan at any time in accordance with one of the following circumstances set forth in subsections (a) through (c) below and in Treasury Regulation Section 1.409A-3(j)(4)(ix):