The ministry said on Monday that companies would be able to introduce "flexible or remote working patterns" throughout the holy month.
Contracted hours vary in the private sector, with many members of staff typically working for nine hours each day.
“In accordance with the requirements and nature of their work, companies may apply flexible or remote work patterns within the limits of the daily working hours during the days of Ramadan,” the ministry said.
The UAE confirmed working hours for federal government employees during Ramadan on Friday.
The Federal Authority for Government Human Resources said in a circular that the working day would run from 9am to 2.30pm from Monday to Thursday, and from 9am until noon on Fridays.
Ministries and federal departments will be allowed to implement flexible working or remote work schedules, the state news agency Wam reported.
This year, Ramadan is expected to begin in the UAE on March 23, but the exact date is likely to be announced on the night of March 22 by the moon-sighting committee.