A proposed building and construction code in Queensland has thrown the industry into confusion and could lead to projects for the Olympic and Paralympic Games being delayed, unions have warned.The Commission of Inquiry into the Construction, Forestry and Maritime Employees Union (CFMEU) is seeking submissions on a draft building and construction code that would apply to government projects that exceed $2 million.Queensland Council of Unions general secretary Jacqueline King has called on Deputy Premier Jarrod Bleijie to explain the proposed changes to the industry."It has thrown the industry into confusion," Ms King said."There is a high risk that some of those [Olympic] projects will be pushed back if the government continues down the track that it has and causes the ongoing confusion."Sit down and explain yourself in a way that makes common sense."Jacqueline King said she had written to federal workplace relations minister Amanda Rishworth with concerns. (ABC News)Ms King said she had written to federal workplace relations minister Amanda Rishworth with concerns the proposal "conflicts with federal laws".The Commission of Inquiry has found the previous Best Practice Industry Conditions, which the LNP axed when it came to power, entrenched excess and unproductive work practices on a number of Queensland's largest construction projects.Earlier this year the commission sought submissions on the potential introduction of an amended construction code and is accepting submissions on the guidelines until July 24.Queensland Major Contractors Association chief executive Andrew Chapman said they had been advocating for a new code to restore balance."The construction code that's been proposed by the Commission of Inquiry will start to make sure that we can remove a lot of these really dictated fixed conditions to make them far more flexible," he said."We need to have a construction code in Queensland to provide safe, productive approaches to work that are fair and reasonable and include relevant conditions that are focused on productivity and safety."Mr Chapman said he did not believe the introduction of a code would lead to delays with an agreement providing a baseline to deliver productive and efficient worksites.Andrew Chapman says he would support a further inquiry into the Queensland CFMEU branch. (ABC News)Unions vow to stand united with workersMs King said one of the key concerns was a ban on negotiating ratios which would impact trainees and apprentices."We have a massive skill shortage here in Queensland," Ms King said."We need to and we expect the industry will continue to train Queenslanders to help build the Queensland Olympics as well as the roads, hospitals and schools that need to continue to be built," she said.In a statement Mr Bleijie said the government was committed to restoring safety and productivity on Queensland job sites.Jarrod Bleijie said the government was committed to restoring safety and productivity on Queensland job sites. (ABC News: Luke Bowden)"There will be site-specific agreements that do not involve BPICs and will likely involve multiple unions for 2032 and beyond venue sites," he said."The Crisafulli Government will consider any recommendations made by the CFMEU Commission of Inquiry."Ms King said the proposed code came as the government removed union representatives, including from the WorkCover Queensland board and the Work Health and Safety advisory board and reviews into laws related to workers."We are here to say that we will stand united with construction workers, we will stand across the union movement to fight these changes," she said.