What is good in terms of foreign to domestic ratio?

It won't be Singapore, with its well-deserved reputation for efficient public service, if such things were unknown or unclear!
There's lots of information available on the MoM webpage, and even an online quota calculator:
http://www.mom.gov.sg/passes-and-permit … rker-quota

beppi wrote:

It won't be Singapore, with its well-deserved reputation for efficient public service, if such things were unknown or unclear!
There's lots of information available on the MoM webpage, and even an online quota calculator:
http://www.mom.gov.sg/passes-and-permit … rker-quota

Thanks beppi. I did see that but that is for S-pass. I know there is no real quota for EP but they consider the ratio, was just curious if there are qualitative ballpark estimates on what's good vs not.

There is no quota for EP, but rather MoM evaluates whether the company in question (and hiring a specific foreigner) benefits Singapore or not. So in some industry or company 100% foreigners might be allowed for strategic reasons, and in another none. These numbers also change over time. Thus there is no ballpark ratio.