Serial litigant Graham McCready says he was urged by "ponytail" waitress Amanda Bailey to drop his legal action against Prime Minister John Key.
Mr McCready refused her request, saying "we don't take instructions from anybody".
He said Ms Bailey approached him through Unite Union last week after he began a private prosecution against Mr Key.
"She didn't want [the case] to proceed," he said.
"The union did say she might want to do it some time in the future, but she didn't want to do it now."