This excerpt taken from the NDSN DEF 14A filed Jan 16, 2009.
Payments Upon Termination Without Cause or for Good Reason
Upon a termination without cause or for good reason of a named executive officer, the named executive officer will receive the payments described above under Payments Made Upon All Terminations. We have no contractual obligation to provide severance payments or benefits to a named executive officer whose employment is terminated without cause or for good reason, other than with respect to Mr. Campbell under his severance arrangement and for all named executive officers, in the instance of a termination without cause or for good reason following a change-in-control. If any negotiated severance arrangement were entered into between us and a named executive officer, we would require the named executive officer to sign a general release and waiver of claims against us and would typically require compliance with confidentiality and non-compete restrictions. Any agreed-upon severance payment will generally be made in equal installments over regular payroll periods subject to delay in the commencement of payments required by Section 409A of the Internal Revenue Code.