Cottontail Wines owner Gerry McCormick returned to the Independent Commission Against Corruption on Tuesday after feeling "ashamed" of testimony he gave on Monday.

Mr McCormick, who did not have legal representation at Monday's hearing in Sydney, said he called his solicitor at 6.30am on Tuesday so he could reappear via video from Wagga.

Mr McCormick said he decided to admit lying to ICAC because of "shame" from concealing tens of thousands of dollars in cash he received to reimburse wages for a Chinese worker.

"The other guys who were involved have had the guts to talk about what they did, so I thought I should man up as well," he said.

On Monday, Mr McCormick revealed he received $270,000 in wine orders from China to compensate him for hiring a visa applicant.

Mr McCormick had also admitted on Monday to false testimony by concealing from ICAC a $5000 payment to "shut me up" about the Chinese visa holder not attending work.

ICAC is investigating allegations that former Wagga MP Daryl Maguire used his parliamentary position and public office for personal benefit.

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Mr McCormick said he received cash payments from Maggie Wang, whom he believed "worked for" Mr Maguire, for taking part in what he described as a "scam".

During questioning yesterday, Mr McCormick denied knowing that Mr Maguire was involved despite admitting his prior testimony was false.

Counsel assisting ICAC Scott Robertson presented messages that he said suggested Mr Maguire was aware of the visa scheme.

"Why, of all people in the world, would you speak to Mr Maguire about the visa scheme ... if it was Ms Wang who sought to involve you in this matter?" Mr Robertson asked.

Mr McCormick said he thought that Ms Wang worked "as an interpreter" for Mr Maguire and he would be able to reinforce to her the he would hire only marketing staff from China.

Other Riverina business owners have told ICAC that they received up to $30,000 in cash from Ms Wang as a fee for each Chinese worker who was granted a visa.

Mr McCormick said he could not recall if his cash payment was $30,000 but that he had spent it all, either by "having a few beers with mates" or booking the cash as proceeds from his restaurant.

Mr McCormick said he felt "trapped" and "coerced" into being involved in the visa scheme and agreed with Mr Robertson's that Mr Maguire's involvement made him think the scheme was initially "above board".