When the national jobs bank is set up next August, only Singaporeans will be able to apply directly on the site itself.
He was responding to a question from Nominated Member of Parliament Teo Siong Seng, who asked whether the national and private jobs banks will be linked for better efficiency and cost savings.
The national jobs bank was announced last month as part of a broader Fair Consideration Framework.
It mandates that firms which want to hire foreign professionals must first advertise for Singaporeans in the jobs bank.
Firms with 25 or fewer staff, as well as those hiring for jobs that pay $12,000 and above a month, are exempted from the rule.
Private jobs portals welcome the prospects of working with MOM.
STJobs senior product manager Ang Yinghui said that the home-grown portal's collaboration with MOM will "help local businesses widen their reach to local job seekers... (and) help the Government achieve its objective of ensuring fair job opportunities for Singaporeans".
JobStreet marketing manager Frieda Chan added: "Private jobs portals can help by automatically re-posting the ad on the national jobs bank - with the employer's consent - on behalf of employers who are unable to find suitable local candidates."