Since graduating from university he has spent 17 years in port work, serving a stint in Keelung before returning to the Kaohsiung Harbor Bureau. He has risen steadily through the ranks and now holds the post of section chief. He also owns property next to the Love River.
大學畢業後累積了十七年的港務工作經驗，待過基隆港，回到高雄港務局工作後，十幾年來鄭旭明一路升上科長，並在愛河旁置產。