But National tertiary education spokesman Paul Goldsmith said the Government needed to take a closer look.
"I was surprised by the amount spent and I'd expect the Education Minister to be asking the right questions about whether it was appropriate or not."
The calls follow a story published in the Herald on Friday which revealed the organisation had spent $174,212 on legal fees during 2016 and to September 2017 to prevent stories being published.
Former Labour MP Sue Moroney supported an investigation into what was happening at Wintec at any level. "I know there's any speculation at Wintec and in the broader community and that speculation needs to be addressed. I want to be assured staff at Wintec are protected from any inappropriate behaviour."
Wintec Council chairman Barry Harris last week defended the spend in a statement to the Herald saying it was the actions of a responsible employer and was necessary to ensure its reputation and that of its people are protected against defamatory statements and allegations.
Harris also confirmed that an independent investigation into a complaint about the chief executive Mark Flowers had been investigated and was found to be based on speculation not evidence.
Wintec has been approached for comment.
Wintec defends spending six figures fighting media organisation