I found this on internet. May be it is helpful for you. See
below
Only eligible candidates will be considered for an
Employment Pass. Criteria include a minimum salary of $3,300 and
acceptable qualifications. Use the Self-Assessment Tool to check a
candidate's eligibility before you apply.
The Employment Pass is for foreign professionals who:
Use the Self-Assessment Tool (SAT) to check if the
candidate qualifies for the pass.
Note on salaries:
Note on acceptable qualifications:
We encourage you to use the Self-Assessment
Tool (SAT) to get an indication of whether a candidate meets
the Employment Pass requirements. Candidates can also use the tool
to assess their eligibility.
If the SAT shows that the candidate is not eligible, you
shouldn't apply for the Employment Pass because it will be
rejected.
If the SAT shows that the candidate is eligible, there is around
a 90% chance that the candidate will get a pass.