Career outside politics Choo was awarded a government university scholarship and upon graduation, he served his scholarship bond in the
Singapore Police Force, where he served 12 years in senior officer ranks including commanding officer of the Woodlands Neighbourhood Police Centre, head of the Special Investigation Section and deputy commander of the Clementi Police Division. He also served a stint on secondment to the Ministry of Manpower, where he was the deputy director of the Foreign Workforce Policy Department and was also a bodyguard assistant for the swearing-in of
Prime Minister Lee Hsien Loong and other new cabinet ministers at the
Istana on 12 August 2004. Choo resigned from the Singapore Police Force with the rank of Deputy Assistant Commissioner of Police to join the NTUC in 2010. After serving on probation as the deputy director of the NTUC's Youth Development Unit, he later became deputy director of the Industrial Relations Unit. He also concurrently served as the executive secretary of the Union of Security Employees and the Singapore Shell Employees Union. After a stint in 2013 in the private sector with Kestrel Capital Pte Ltd, an investment firm, Choo returned to the public sector to rejoin NTUC in April 2014 and became the assistant secretary-general of
National Trades Union Congress (NTUC). He also became the Director of Policy Division at NTUC. On 26 May 2025, Choo resigned from the board of
SBS Transit, a position he had held since April 2021, following his appointment as Minister of State for Defence on 23 May 2025.
Politics Choo was the mayor of the North East District of Singapore from 2017 to 2025. After Yaw was expelled from the WP and lost his seat in Parliament in 2012, Choo was nominated again by the PAP for the
by-election in the SMC that same year. He was defeated in the by-election by the WP with 37.92% of the valid votes. Choo went to contest in
Tampines GRC led by Education Minister
Heng Swee Keat and Minister
Masagos Zulkifli in the
2015 general election, where the PAP team won with 72.07% of the vote. He was then assigned to the Tampines Changkat division. Choo, as an MP also working for NTUC, is a labour MP as defined by the Singaporean media. In October 2024,
ChannelNewsAsia noted that none of the labour MPs filed any questions or spoke during the parliamentary debate concerning the controversial deal to sell a controlling 51% stake in
NTUC Enterprise subsidiary
Income Insurance to
Allianz. Before the
2025 general election,
Tampines Changkat SMC, where Choo stood for reelection, was carved from his Tampines Changkat division. He defeated Kenneth Foo from the WP with 56.16% of the vote. ==Personal life==