Government offices in Abu Dhabi and Dubai have confirmed that they will also adopt the new hours.
Under the changes, 2 January 2022 will be an official holiday in both cities.
No specific instructions or guidance was made relating to the private sector, but companies do not require the government's permission to set their working week and are likely to follow suit.
The federal government hopes the new working week will better align the UAE with global markets and boost work-life balance.
Luke Tapp, Middle East employment expert, said the announcement was an “incredibly positive and exciting development for the UAE”.
“It will of course align the working week with global markets as well as creating a healthy work-life balance for employees within the public sector, but it will also have a significant impact from an economic, social and well-being perspective.”
“We recommend that private sector employers continue monitor announcements from the UAE authorities and consider whether and to what extent this type of change could be implemented within their organization in practice,” Tapp said.