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## 19. Retirement Benefit Plans (continued) 

The amounts recognized in other comprehensive income during the year are as follows: 

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## e) Health Care Sensitivity 

A 1% change in the initial and ultimate medical trend rate assumptions would have the following effect on our post- retirement obligations and expense: 

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## f) Investment of Plan Assets 

The assets of our defined benefit pension plans are managed by pension asset fund managers under the oversight of the Teck Resources Limited Executive Pension Committee. 

Our pension plan investment strategies support the objectives of each defined benefit plan and are related to the plan demographics and timing of expected benefit payments to plan members. The objective for the plan asset portfolios is to achieve annual portfolio returns over a four-year period in excess of the annual percentage change in the Consumer Price Index plus a certain premium. 

To achieve this objective, a strategic asset allocation policy has been developed for each defined benefit plan. The asset allocation is monitored quarterly and rebalanced if the funds in an asset class exceed their allowable allocation ranges. We review the investment guidelines for each plan at least annually, and the portfolio and investment managers’ performance is monitored quarterly. 

