The FTSE 100 advertising agency WPP has began offering free lunches to lure employees back into the office on Fridays.

From April, WPP’s team of 108,000 people is expected to be in the office at least four days a week.

The new rules require employees to work in the office at least two Fridays a month. In a bid to appeal to staff, WPP has rolled out a free-lunch Friday, as reported by The Times.

The advertising giant’s changes to office flexibility has faced backlash from employees, which has included an online petition protesting the rules.

City AM revealed earlier this month that two of WPP’s flagship advertising agencies have been unable to introduce the company’s return-to-office mandate, due to an insufficient amount of desks.

Ogilvy and Grey’s London offices were both unable to rearrange their offices before the policy came into force on April 1.

Two Grey staff members told City AM the four day week requirement will not come into force until at least June to give the agency time to add desks to its office floors.