Bonus - any benefit to getting it paid into pension?

I am due a bonus, commission to be precise, and was wondering should i get it paid directly into my PRSA by my employer.

I currently pay approximately 12% of my pretax salary into it and this lump will be slightly more than 10% of my current (recently reduced) salary.

I will probably reduce payments significantly for the next 6 months as I want to replenish savings either way.

I currently do an annual return as we used to have rental properties and continue to to do it annually as a way to save a lump every year with the tax refund.

Any advice appreciated.