operati0n_pndA said:
Should I be nervous about not getting the job, or getting caught in a lie? And if/when I get caught what will they do or say
Depends - can you be found out? How bad was the lie? I find that some inconsequential lies[footnote]Though "lies" tends to be a bit over dramatic way of calling them. More like "banter", really, I guess.[/footnote] during an interview are...well, inconsequential. If you claimed you had an expertise you didn't, it'd be a different matter.
Your case? As long as it wasn't something along the lines of "Oh yes, I did suggest some improvements, and thanks to me, we got 10 fold increase in profits in just few short months", I wouldn't say it would be significant.
Also, do you think your new potential employers are
really likely to check up on what you said? Again, if you didn't embellish a lot, it can fly under the radar - even if they contacted your previous workplace.
The thing to remember about interviews is that they aren't an interrogation aimed at uncovering the objective truth - they are a somewhat imperfect means to try and gauge how well you'd fit in the new workplace. Aside from aptitude test stages which are less about "how well you fit" and more about "are you actually competent" - chances are you won't really be able to lie there, not to a really effective degree, at least (and if you could...well, you wouldn't be caught, of course).
At any rate, to address your second question - assuming you are caught - well, it's probably nothing you can do. I really,
really doubt your potential employers would contact you to chase you up on that one answer. I'd say nine times out of ten they would have already made up their mind. Heck, there is a high chance they have done that already[footnote]And the decision could be "yes" as well as "no"[/footnote] - I've done a couple of interviews at my workplace and just in general I know how they go - you usually know whether to accept or reject the candidate by the time the interview finishes.
But, hey, let's do assume that your potential employers chase you up. Again, it's unlikely, but still - if that happens -
it's a good thing. They generally wouldn't bother if you were to be rejected anyway. So, if they do contact you...well, best case is to own up to it, to a degree, at least. Maybe claim that upon reflection, the improvement you suggested wasn't as big as you hoped but it just meant more for you - being your first job and all. Still not the truth, I guess, but just don't try to tangle it up with a bigger lie - it's not going to be worth it. Remember - if you get hired afterwards, you'll be seeing those people pretty much every day until you leave for greener pastures.