Employment screening: lied about employment datesWatch
I appreciate it's very unethical of me but I just couldn't think of how to explain it.
I'd front up to it and explain it as a simple oversight. If you stick to your guns and maintain it's true then you'll be exposed after the background check.
Important point: Employers don't give 'references' any more. They're not allowed to by law. The only thing they CAN confirm is your employment dates.