Please take a moment to call a lender on my site(Bryan Sheets)! He will need more questions answered to better serve you! He has awesome referrals and has been in the business over 14 years!
There really is more information needed to answer your question. Are you referring to a loan to purchase a home?
If so, it would depend on your debt to income ratios now and after retirement. Most automated underwriting systems will only be asking for paystubs and W2 statements. However, most lenders are at minimum going to do a verbal employment verification if not a full written one. If your employer makes any reference to your pending retirement, the lender will want to have documentation of your retirement income to properly calculate your debt-to-income ratios. If there is no reference to your retirement, you'll probably be fine if you're just using your current income to qualify. If your income is somehow increasing when you start receiving your pension and you are trying to use that higher income to qualify, then you may have a problem.
Your question is not one that is a short, simple answer, but I'd be happy to dive deeper into it so you can have a thorough and correct evaluation of your situation.
President / Mortgage Consultant
Antigua Capital Funding