Here's an excerpt from the Labour Department announcement:

The Government announced today (September 27) that the Minimum Allowable Wage (MAW) for foreign domestic helpers (FDHs) in Hong Kong will be increased by 2.4 per cent, from $4,520 to $4,630 per month.

　　“Under the Standard Employment Contract for hiring FDHs, employers are required to provide FDHs with food free of charge. At present, the vast majority of employers provide free food to FDHs. Employers may, however, choose to pay a food allowance in lieu. The food allowance will be increased by $46 (or 4.3 per cent) from not less than $1,075 to not less than $1,121 per month.

　　The new levels of the MAW and food allowance will apply to all FDH contracts signed on or after tomorrow (September 28).”

https://www.labour.gov.hk/eng/news/press20190927.htm