Will USCIS issue the receipt number for accepted petition before cap close?

My petition for H1B cap 2013 was filed by my employer on 2nd Apr 2012 but I haven’t received the receipt number yet. I checked with my employer they are saying that they are still waiting for receipt number for my case, since they haven’t received any rejection on my petition from USCIS.

USCIS will issue receipt for all petitions - if its PP your attorney will get an email notification within a day and if its regular your receipt might take upto 60 days.

In your case since its over 60 days you should ask your attorney to contact USCIS about the receipt and case status. The receipt is issued for all received petitions that contain the required/requested documents. Also its the first step of the H1b process.