I guess the whole civil service will be moving towards " recruit
when necessary" for it is trying to trim down it's overall
strength. You see reports of Civil Service cutting down and not
renewing the contracts of some and so on. It's not surprising to
see that HASE scheme is not actively recruiting.
As for Hons vs working experience, my take is that it will depend
on how you can convince them that your working experience would be
relevant to the position that you are applying for.
Found this on the recruitment website for civil service http://www.vog.gov.sg
Question: Is it true that the Civil Service only recruits graduates
with excellent academic qualifications?
Answer: The Civil Service does not employ solely
on academic results.
The Civil Service recruits both graduates (with or without honours)
and non-graduates, who have the required skills and competencies
and are willing to contribute to the development of
Singapore.
Our recruitment process is open and meritocratic. We look for
attributes like relevant work experience, academic qualifications
and performance, as well as personal qualities such as leadership,
initiative and communication skills.
The Civil Service uses academic results as a proxy measure of a
candidate's cognitive ability. This is just one of the requirements
in consideration for a good job-fit. A Ministry may appoint a
candidate who possesses good track records, personal attributes,
skills and work experience that is directly relevant to the job,
even though he may lack the requisite academic qualification.