Labor stalwart Kim Carr is retiring from politics at the upcoming election, having served as a Victorian senator since 1993.
Labor leader Anthony Albanese paid tribute to Senator Carr, who served as a minister in both the Kevin Rudd and Julia Gillard Governments.
"Kim Carr has been a tireless advocate for the cause of Labor during his three decades of service in our nation's parliament," Mr Albanese said in a statement on Sunday.
"The parliament has had no stronger supporter of Australian manufacturing and science than Kim Carr."
The 66-year old senator served as minister for innovation, industry, science and research, minister for manufacturing, minister for defence material, minister for human services and minister for higher education.
Mr Albanese said the senator also played a leading role as a long-term member of the ALP national executive.
"Kim has always been a passionate and resolute campaigner for the Labor Party and the union movement's push to ensure workers' rights at work are respected," he said.