Wu International Investments director Alex Wood told the Independent Commission Against Corruption on Wednesday that Ernest Wong organised the pass to the Macquarie Street building so he could have weekly or fortnightly meetings with the then-upper house MP.
Mr Wood, previously known as Mr Wu, told the inquiry he knew Mr Wong was a government official but wasn't aware of his specific role because he had "no interest in politics".
Speaking with the aid of a Cantonese interpreter, Mr Wood said Mr Wong wanted to train him to become a "future leader for the Chinese community in Australia".
The inquiry heard that Mr Wood regarded Mr Wong as a "senior" whom he respected but denied they were personal friends.
"He's a government official and we can't be friends with a government official," Mr Wood said.
Mr Wood was questioned about the now infamous 2015 Chinese Friends of Labor fundraising dinner and whether Mr Wong asked him to arrange for two Wu International Investment employees to falsely state they each donated $5000.
The company boss denied the allegation and said if the request had happened it would have been handled by his deputy general manager Quanbao Liao.
"I didn't know about the function, who had to donate ... and what reason," he told the ICAC.
"I really did not know. If this had been the case it was handled by Dr Liao."
The ICAC is examining whether Chinese billionaire Huang Xiangmo, now banned from Australia, was the true source of $100,000 said to be donated by the 12 people at the March 2015 CFL dinner.
Mr Huang, a property developer, was prohibited by law from making donations to NSW political parties.
Two donations were disclosed as being from people associated with Wu International, including former employee Steve Tong who denied ever making a donation. The second was Dr Liao, who in 2018 took his own life.
Mr Wood denied knowing in 2015 that Mr Tong's name had been fraudulently used for the donation.
Counsel assisting Scott Robertson then accused Mr Wood of lying to the commission.
"To my recollection I have not seen with my own eyes what happened," Mr Wood responded.