Queensland's former Commonwealth Games minister says an ex-employee was the best person to take on a taxpayer-funded trip to Glasgow last year.
Liberal National Party MP Jann Stuckey has defended taking her former chief of staff, James Martin, to the 2014 Commonwealth Games in a trip which cost about $40,000.
She says Mr Martin had already been registered and booked before he became then Communities Minister Tracy Davis's chief of staff last August.
Ms Stuckey says Mr Martin was the right person to join her to look at the legacy outcomes of the Glasgow Games.
"Having worked in my office for two years, his experience and corporate knowledge made Mr Martin the most appropriate staff member to accompany me on the trip," the former minister said in a statement on Tuesday.
Current Commonwealth Games Minister Kate Jones has called for the Ministerial Services Branch to investigate Mr Martin's involvement in the trip.
"One would think that if you were truly interested in looking at the legacy outcomes of Glasgow then you would at least take: a) a staff member that worked for you, or (b) a staff member that intended to work for you," Ms Jones told a budget estimates hearing on Tuesday morning.
Mr Martin is a former state secretary of the Liberal National Party and is currently an advisor to Deputy Prime Minister Warren Truss.