Nimon began working for her family's bus company, Nimon & Sons, when she was a teenager. After a stint working in advertising in Auckland, she returned to Nimon & Sons in 2015,[5] first working as the marketing manager before later becoming the general manager.[6] The company struggled during the COVID-19 pandemic,[7] and in 2021 it lost a school bus contract to Tranzit Group,[6] prompting Nimon to leave for a position as transport manager for the Hawke's Bay Regional Council.[8] The company was soon bought out by Tranzit after 116 years of operation.[9]
Nimon stepped down from her role as transport manager at the regional council in 2022 to focus on her second parliamentary campaign.[10] In December 2022, she married Jeremy Lawson.[11]
In May 2020, Nimon was selected as National's candidate for Napier in the 2020 election.[12] She came second with 37.04%,[13] and her list position of 45 was not high enough to be elected. After her defeat, she pledged to stand again.[14]
On 20 November 2022, it was announced that Nimon would again contest Napier at the 2023 New Zealand general election.[15] On election night on 14 October 2023, Nimon won the seat by a margin of 8,909 votes, flipping the seat back to National.[16]
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