It was former Queensland union boss Dave Hanna's idea to cover security cameras while documents, potentially needed by the royal commission into union corruption, were removed, the inquiry has heard.

The commission served the Construction, Forestry, Mining and Energy Union (CFMEU) with a notice to produce documents on April 1, 2014.

But on the same day, documents which may have been needed, were set aside in the union's Brisbane office for destruction, the commission heard today.

Mr Hanna, a former CFMEU president, said yesterday that it was the idea of current Queensland secretary Michael Ravbar to cover the cameras when boxes of documents were being taken away.

But the union's office manager Paula Masters told the inquiry today it was Mr Hanna's suggestion.

She acknowledged it would have been Mr Ravbar's final decision to cover the cameras, but told the inquiry Mr Hanna "instigated it".

Ms Masters told the commission she did not know why the security cameras were covered up.

"I didn't see any either any harm or any necessity for it," she said.

Tip truck full of paperwork and some 'dirt'

The inquiry heard today that Mr Ravbar set aside documents to be destroyed on April 1, 2014.

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It was the same day the commission gave notice to produce paperwork to the union.

Ms Masters told the inquiry hundreds of files, some five centimetres thick, were set aside for destruction as part of an office clean-up following the merger between the Builders Labourers Federation and the CFMEU.

The commission heard Mr Ravbar started looking through the files in the middle of the afternoon and finished about 8:00pm.

Ms Masters was asked by counsel assisting the commission Sarah McNaughton whether there was any sense of priority or urgency that day.

"Only that Michael had it in his mind that there was an awful mess and it needed to be cleaned up," Ms Masters said.

Later on Tuesday, the commission was shown a rubbish tip receipt that confirmed claims nearly seven tonnes of paperwork was dumped a few days after the CFMEU received a notice to produce documents.

The commission saw a 6.86 tonne weigh bridge docket for a tip at Ipswich west of Brisbane, dated April 4, 2014.

Tip truck operator Ben Flanagan told the inquiry his vehicle was full of paperwork and some "dirt" when he made the trip to the dump that day.

Photo of tip truck tendered to the royal commission hearing in Brisbane. ( Supplied: Royal Commission into Trade Union Governance and Corruption )

Premier resists calls to sever ties with CFMEU

Liberal National Party leader Lawrence Springborg said Labor should no longer rely on the CFMEU for financial support.

While Mr Hanna quit Labor last week, Mr Ravbar sits on the ALP's National Executive.

Michael Ravbar, the Queensland CFMEU's state secretary. ( AAP: Dan Peled )

"It is not right for the Labor Party to be affiliated with an organisation whose activities are bordering on outlaw and criminal," he said.

Premier Annastacia Palaszczuk rejected Mr Springborg's call for Labor to cut end its affiliation with the CFMEU.

But she said she had been in several discussions with Evan Moorhead, the state secretary.

"Let the royal commission run its course," she said.

"I don't think what is happening and is being revealed is comforting for anyone.

"What is being revealed is simply outrageous."

Shorten has zero tolerance for corruption

Federal Labor leader Bill Shorten said if the inquiry found Mr Ravbar broke the law, his position in the Labor executive would be untenable.

"There is no place for criminality in Australia's workplaces full stop," he said.

"There hasn't been all the evidence fully examined, but I'm not going to sugar coat this or just dismiss it.

"If there is criminality established, if there is illegality established, well Labor has zero tolerance or place for that within the ranks of the Labor party."