The day of celebration stems from the preamble of the Australian constitution to "humbly rely on the blessing of the Almighty God."
Prime Minister Tony Abbott has paid tribute in a statement, focusing on the workers who "serve their communities and make a difference to the lives of others."
Speaking of the transport and travel sector, he said: "The transport industry keeps our country moving and employs more than 347,000 people. The travel industry contributes over $8 billion to our economy and employs over 58,000 people."
Opposition leader Bill Shorten has also encouraged the nation to be thankful for the people who have made a 'valuable contribution' to the community.
"Thank your bus driver as you get off, tell the courier they've done a good job and make a point of acknowledging the good work of the people who've helped you book your family holiday," he said.
Faith leaders have also spoken out in support of the event.
Anglican Archbishop of Sydney, Peter Jensen said: "As Christian people, the bible constantly reminds us that we should be thankful to God, who is ultimately the source of every good and perfect gift. It is therefore important as a nation that we give thanks to God."
Catholic Archbishop of Sydney, George Pell, said "The National Day of Thanksgiving provides all Australians with an opportunity to remember how abundantly God has blessed our country, and to give thanks both for God's blessings, and to the people who are blessings in our own lives."
The National Day of Thanksgiving is held on the last Saturday of May each year. Over 1,600 communities and 250,000 people participated in the National Day of Thanksgiving events across Australia in 2013.