Timesheets are mandatory, official, unattractive. Nobody ever remembers to fill it out. This happens everywhere in the world: people hate filling in their hours. JWT and Casa had just launched a new interface for the timesheet, aiming to make it friendlier, and decided it should be announced in a big way.

Instead of creating posters or end marketing, we created this initiative: reward people for enduring an obligation. We built a fridge, filled with beer that was electronically sealed. 1 fridge was placed at each of the company's offices, at places where people gather. It carried the message: 'it will only open after 100% of the timesheets are filled in.

The results: people talk about it in corridors, and press each other about their timesheet doing. Outside the agency it resonated so well that it has since appeared on TV news, finance and management publications and even on Contagious, a very prestigious site.

Each of the company's 6 offices in Brazil has its own timesheet requirements. The timesheet server of each branch was hooked onto a metre, programmed to open an electronic lock installed into fridges full of beer and other drinks. The fridges are permanent and have become part of the agency's image as a cool place to work.Coding is simple, but a special technology (similar to the Arduino board) was used. It converts computer commands into electrical commands. Once the goal of 100% is reached within the server, the board tells the lock to open itself. During the week employees receive an email about its progress which leads to people nagging each other, inducing positive peer pressure.Besides making Fridays happier, the fridge has managed to transform the task of timesheet filling into a fun thing, envied and cheered by companies all over the world.

The fridge opening itself means success for the initiative. It launched on April 06, and has opened every Friday ever since, in all 6 branches of the company. It has appeared on Contagious, CCSP, Voxnews, Brainstorm9, Época Negócios, SBT TV (News). On social networks the amount of mentions has been difficult to measure. We have received positive reviews from Waxy.com, Hyper Island and other important members of the online community.