You can get the current year and two previous years’ 1099-Rs...
Snippet of Article: "...You can get the current year and two previous years’ 1099-Rs on Retirement Services Online, using these instructions. Please make sure we have the correct address on file before requesting your duplicates. You can also request duplicates by calling us at 1-888-767-6738.
For duplicate 1099-Rs from more than three years ago, you must send OPM proof of an IRS tax audit or provide a reason for your request (e.g., a court order). You may also contact the Internal Revenue Service toll free at 1-800-829-1040 to request previous years’ 1099-Rs. The IRS maintains records for 10 years. ..."