As a teenager, she was a co-host of the
GMA Network–
Iloilo local Sunday variety show, Bongga from 2004 to 2006. On December 19, 2015, Ong joined the environmental group Ecowaste Coalition and launched the
Iwas-Paputoxic campaign and urged the people, especially the youth, to welcome the 2016 New Year using safe and non-toxic materials. She hosted the opening ceremony of the Asia–Pacific Forestry Week 2016 aimed at promoting sustainable forest management on February 23, 2016, which was organized by the
United Nations Food and Agriculture Organization, Asia–Pacific Forestry Commission, and the
Philippine Department of Environment and Natural Resources. Ong led ten other beauty pageant titleholders in launching a project of the
Armed Forces of the Philippines, dubbed as “Race to One Million Seedlings”, held in
Camp Aguinaldo. The project aimed to grow and plant one million tree seedlings across
Metro Manila, as part of the National Greening Program, which sought to increase forest cover in Metro Manila and adjacent regions. Together with
Philippine Senator Cynthia Villar, Ong led the
Earth Day celebration in the Philippines on April 22, 2016, at the
Las Piñas-Parañaque Critical Habitat and Ecotourism Area (LPPCHEA), a wetland situated south of
Manila Bay. As an ambassador for environmental protection campaigns in the Philippines, she joined a coastal cleaning effort on the coast of
Freedom Island. She also participated with other women in a hand-painting exercise to raise awareness and develop a sense of public responsibility pertaining to environmentally sustainable practices on Earth Day. Ong completed the Climate Reality Leadership Corps training under
US Vice President Al Gore, founder and chairman of the Climate Change Reality Project, for her pursuance of effective platform to create environmental awareness on climate change. Ong travelled to the Reunion Islands and crowned Elsa Techer as Miss Earth Reunion Islands 2016 on May 7, 2016. During the
Philippines Independence Day on June 12, 2016, she talked about her advocacy to fight climate change. On July 28, 2016, Ong went to the United States to attend Miss Earth United States 2016. She went to Armenia, Colombia, on August 11, 2016, together with Btittany Ann Payne Miss Earth Water 2016, to crown the winner of Miss Earth Colombia 2016. She also joined the Miss Earth Colombia 2016 candidates for the Todos Ponemos program to promote sustainable development, preservation of natural resources, and "the three Rs": reduce, reuse, recycle. Ong arrived in Sri Lanka on August 26, 2016, with the invitation by TV Derana. There she crowned the winner Derana Miss Sri Lanka for Miss Earth 2016 on August 31, 2016, at Citrus, Waskaduwa. In Sri Lanka, she engaged in numerous environmental projects, including the launching of “Manusath Derana Nature Force’ project, an initiative to plant one million trees in the country where 300 sandalwood plants were initially planted. She was accompanied by
Brittany Ann Payne,
Miss Earth Water 2016. Ong served as the
muse of Thailand delegates in the
opening ceremony of the
2019 Southeast Asian Games held at the
Philippine Arena in the Philippines on November 30, 2019. She appeared in the cover page of a
Harper's Bazaar- Vietnam edition in November 2020 edition. ==Accolades and commendations==