appealed H1B visa by employer

[coffeestirsyou]

I came to the US with an F1 VISA. I used my OPT when I was done w my masters. My employer then sponsored my h1b visa application. They filed in on April 30th 2012. Uscis needed some clarifications as my employer failed to send sufficient documentation. When the RFE was sent, uscis sent a letter of denial onDec 6 2012. My employer then sent an appeal on Dec 13 2012. No developments on the processing have occured at this point. Which leads me to my question....Can I still work for my employer while this appeal that they made is pending?

Really need an answer. Thank you.