The company which has been blacklisted must have been on your CV/resume and still you have been selected.
Now ask your current organisation what documentation do they require for verification of service at black listed company and ask them to give solution.
What you bring from BL(black listed) company is not acceptable-so what do they expect you to do??
Put the ball in their court by giving them copies of your documentation related to BL company and let them clarify in writing/email.
22nd May 2015 From India, Pune
Yes you are absolutely correct. The BL company has been on my resume and the application form as well. Also I appeared for the interview in my current org in Sept 2014 and was issued the offer letter in November 2014. During this period I had submitted my all proof of employment with this BL org (Provisional appointment letter, Final Offer letter, Relieving letter and Service certificate) around five times to different HR SPOCs. But no points were being raised.
Also I was given an extension on my joining date to complete my notice period with my last organization.
It is just that I am a bit worried regarding my position in the current company also I wanted to know whether I am legally in a position to challenge the organization's perspective.
22nd May 2015 From Australia, Sydney