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The principal actuarial assumptions have an effect on the amounts reported for the defined benefit obligation. A change as indicated in The table below in the principal actuarial assumptions would have the following effects on the defined benefit obligation per year-end: 

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The above sensitivity analysis is based on a change in an assumption while holding all other assumptions constant. In practice, this is unlikely to occur, and changes in some of the assumptions may be correlated. When calculating the sensitivity of the defined benefit obligation to significant actuarial assumptions the same method (present value of the defined benefit obligation calculated with the projected unit credit method at the end of the reporting period) has been applied as when calculating the pension liability recognized within the statement of financial position. 

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## Aegon the Netherlands 

Aegon the Netherlands has a number of defined benefit plans and a small number of defined contribution plans. The defined benefit plans are governed by the Management Board of Aegon the Netherlands. The Management Board has the full power and discretion to administer the plan including developing investment policy and managing assets for the plans (although these assets do not qualify as ‘plan assets’ as defined by IFRS), deciding questions related to eligibility and benefit amounts, and any disputes that may arise from plan participants and for complying with the plan provisions, and legal requirements related to the plan and its operation. Aegon the Netherlands runs, in principle, full actuarial and investment risk regarding the defined benefit plans. A part of this risk can be attributed to plan participants by lowering indexation or by increasing employee contributions. 

Investment strategies are established based on asset and liability studies. The overall goal is to maximize total investment returns to provide sufficient funding for the present and anticipated future benefit obligations within the constraints of a prudent level of portfolio risk. These studies use for example return objectives and various investment instruments. Investment restrictions are updated regularly and they result in asset allocation mix and hedges. 

The contributions to the retirement benefit plan of Aegon the Netherlands are paid by both the employees and the employer, with the employer contribution being variable. The benefits covered are retirement benefits, disability, death and survivor pension and are based on an average salary system. Employees earning more than EUR 45,978 per year (as at January 1, 2013) have an option to contribute to a defined contribution plan for the excess salary. However, the cost for the company remains the same. The defined benefit plans were unfunded by EUR 2,119 million at December 31, 2013 (2012: EUR 2,191 million). As the assets held by Aegon the Netherlands for retirement benefits do not meet the definition of plan assets, they were not deducted in calculating this amount. Instead, these assets are recognized as general account assets. Consequently, the return on these assets do not form part of the calculation of defined benefit expenses. 

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