Jay Palmer, the employee, filed a lawsuit earlier this year against Indian offshore giant Infosys, alleging he was harassed after refusing to help the company use B-1 visas, a business visitor visa, for work he claims needed an H-1B work visa.

Jury selection is due to begin Aug. 20 in U.S. District Court in Alabama.

Infosys has asked the judge in this case to throw it out for lack of evidence. In response, Palmer, this month filed a number of documents, from copies of threats he received, to affidavits and internal emails, in order to back up his case.

The documents indicate that other employees, not just Palmer, had concerns about visa use at the firm.

One email submitted as evidence was written by an Infosys HR associate in October, 2010 and sent to an Infosys whistleblower team. This employee said that she wanted to report fraudulent activity relating to employees working on client sites on B-1 visas.