This excerpt taken from the DTV 10-K filed Mar 1, 2005.
14. NO RIGHT OF EMPLOYMENT
Neither participation in the Plan nor the fact that an Employee has received an Award under the Plan confers upon any Employee any right to continue in the employ of the Company or shall interfere with or restrict in any way the right of the Company to discharge the Employee at any time for any reason whatsoever, with or without cause. The adoption of the Plan shall not constitute a contract between the Company and any Employee.