coker

I need to apply for IQA to have my degree assessed. I understand NZQA requires original work reference documents. I have some original documents but not all. Is there a chance NZQA will accept certified copies? I tried contacting some of my previous employers but couple of them are out of business. I do have tax records, pay stubs and other supporting documents. I also have original attestations from the attorneys of the companies stating that the documents are exact copies of originals. Will these do? Thanks.