[Dan]

Chief Justice is auto qualified like minister lah.

Public sector service requirement:
To fulfil the public sector service requirement, a person must have:

Held office as Minister, Chief Justice, Speaker, Attorney Attorney-General, Chairman of the Public Service Commission, Auditor-General, Accountant-General or Permanent Secretary for at least 3 years; or
Served as the chief executive of a key statutory board or government company, such as the Housing Development Board or GIC Private Limited, for at least 3 years.

Thanks for the info.