This excerpt taken from the DVN DEF 14A filed Apr 27, 2007.
NONQUALIFIED DEFERRED COMPENSATION IN 2006
The table below shows information about our Deferred Compensation Plan. The Deferred Compensation Plan is designed to allow each executive to contribute up to 50% of his or her base salary and up to 100% of his or her bonus, and receive a Company match beyond the contribution limits prescribed by the IRS with regard to our 401(k) Plan. The Deferred Compensation Plan allows executives to defer a portion of their cash compensation in a tax effective way at a minimal cost to us.