Participants with questions should contact the Service Center at 877.644. The Minnesota Deferred Compensation Plan (MNDCP) is a voluntary savings plan intended for long-term investing for retirement.Forms and Help. Forms. Help. Need more information about deferred compensation plans? NACo's Deferred Compensation Program has helped more than 1.5 million county employees and retirees save for and live comfortably in retirement. If you have questions, contact Ohio Deferred Compensation. Now is the time to GET STARTED. Your pension and your Ohio Deferred Compensation account are here to provide you with retirement income when you stop working. Telephone number: 800-4LINCOLN OR 800-454-6265. Fax number: 260-455-1874. Date. Date.