I have an approved H1B that is valid till 2017. My current employer is not sharing the details of the H1B.(No receipt no, no I-797). Is it possible to transfer the visa to another employer or to get the details of the H1B by any way.
If you don’t know the receipt number, then it not be possible to do the transfer.
I am not 100% sure if you can file FOIA to get the receipt number and copy of approval notice, but you can check w/ others or search online on that.
Once you have at least the receipt number, new employer can file a cap-exempt petition for you (loosely referred as H-1 transfer)