This excerpt taken from the NTAP DEF 14A filed Jul 25, 2007.
No Effect on Employment. Neither this Plan, nor any term, condition or provision of this Plan is intended to create any entitlement of any employee of the Company to any award or other benefit under this Plan, or in lieu of an award or benefit under this Plan.
6.1.1. Neither this Plan, nor any term, condition or provision of this Plan is intended to terminate or change any right or obligation existing under a non-disclosure/confidential/proprietary/trade secrets information and inventions assignment agreement between any individual and the Company.
6.1.2. Actual Awards made under this Plan are not considered for the purpose of calculating any extra benefits; any termination, severance, redundancy, or end-of-service premium payments; other bonuses or long-service awards; overtime premiums; pension or retirement benefits; or future Base Pay or any other payment to be made by the Company to a Participant or former Participant.
6.1.3. Neither this Plan, nor any term, condition or provision of this Plan is intended to alter the at-will nature of employment with the Company. All employment with the Company is for an indefinite period of time and may be terminated by the employee or the Company at any time, with or without cause or advance notice. The at-will nature of employment with the Company can only be changed by an individualized, express written agreement signed by the President of Network Appliance, Inc. and by the employee.