[2] During the early years of his career, he served in the former New Territories Administration, Resettlement Department and Environment Branch.

[2] Upon the resignation of Sir Donald Tsang on 25 May 2005, he assumed the post as the acting Chief Secretary for Administration, until Rafael Hui was appointed.

[3] Around 2007, he was known for pushing trilingual education with English, Cantonese and Putonghua to boost Hong Kong's competitiveness.

The new HK government headquarters found as many as 19 areas contaminated with legionella bacteria out of 43 water samples.

[7] In 1994, Suen purchased a new home, the low-rise Shuk Yuen building in Green Lane Happy Valley.