@steven_van_eyk When your employer contributes to your RPP, these contributions are indeed shown, however they are reflected in Box 52 which has no effect on your actual tax refund or tax payable.
Total contributions to your RPP, if you’re lucky enough to have one, appear in box 52. The amount your employer paid for your pension is equal to box 52 minus box 20. RPP contributions lower the amount you can put into your own Registered Retirement Savings Plan (RRSP). Box 52, then, also reflects the amount by which your RRSP contribution room is reduced.