My question involves labor and employment law for the state of: PA

I was terminated from my job on July 1, and I then filed for unemployment compensation and was approved for it. My notice of determination from the Department of Labor stated that there was insufficient information to show whether the Claimant was warned about the rule violation, and the determination was that i was eligible for benefits under Section 402(e).

Today i received in the mail a copy of the petition to appeal that my ex-employer filed(on the last day that they could), wtih a hearing date. The hearing date letter states that the specific issue to be discussed is 501(e), Whether the appellant filed a timely and valid appeal from the initial determination.

What does all this mean, and what can I do?