If this is a Defined Contribution pension scheme and your employer is paying twice what you pay in, then there is a benefit in paying the €1,100 if you can, because for your €1,100 an amount of €3,300 will go into your pension fund. In addition, you will get tax relief on your contribution so it should actually cost you less than €1,100.
This answer is based only on the facts you have given - it takes no account of your other financial circumstances, which I know nothing about.