Yes, this is an official email from MOM.
In view of the high number of imported COVID-19 cases, MOM will be stepping up the monitoring of foreign work pass holders who entered Singapore between 14 and 20 March 2020 and were not issued a Stay-Home Notice.
If you need more time to collate the information, you can submit the returns to MOM by 27 March 2020, 2359 hrs.
A local number is required as MOM will be sending SMSes to the worker to check on their whereabouts.
MOM only require details of foreign work pass holders who are unwell in the health declaration. However, you should still monitor the health of your work pass holders and inform MOM whether the temperature checks have been done.
The exercise is only applicable to foreign work pass holders (including Work Permit holders, S Pass holders and Employment Pass holders) who had entered Singapore between 14 and 20 March 2020 and not issued with a Stay-Home Notice. This is an additional precautionary measure in view of the high number of imported cases.