How would you like to start your working day at the bar? It might sound like a dangerous offer, but at Diageo, it isn't just allowed, it's encouraged. Take its Singapore office for example, which boasts not one but two watering holes. A main bar sits at the "heart" of the 17,000 square-foot workplace, while the world's only in-house Johnnie Walker whisky room provides an exclusive backdrop for all-important client meetings.

Inside Diageo's Singapore office Diageo

The two bespoke spaces are not simply a ploy to keep spirits high at the global alcohol producer. They're all part of its strategy to create a collaborative and inspiring environment, as Leesa Rawlings, head of talent engagement for APAC, told CNBC's "Office Envy" during a tour of the building. "Our whole space here was actually designed along Diageo's global design principles, which are really about how to be inclusive, how to bring people into the work space and also how to make sure that people work in a collaborative fashion," Rawlings said.

Inside Diageo's Singapore office Diageo

The main Diageo bar is part of a wider open-plan work space, which incorporates a living room area and a hot-desk layout to encourage teamwork among the office's 174 staff. "We have 'hot-desking' in the purest sense of the word — we have no desktops, we have no screens, we have very little cords," explained Rawlings.

It becomes a place at night where we can bring our friends and family. Leesa Rawlings Diageo's head of talent engagement for APAC

"Everything is hidden to create a clean and uncluttered view and we can move to any work space that we want to, depending on what the work is that we need to do." The central bar, which showcases Diageo brands such as Baileys, Smirnoff and Guinness, is accessible as a work space for staff throughout the day.

At Diageo Singapore, the office has its very own "Johnnie Walker House" Diageo

But it also plays host to regular internal and external events and is open to guests at the end of the week. "It becomes a place at night where we can bring our friends and family every Thursday and Friday night, to celebrate the wonderful products we have and the amazing view," said Rawlings. The piece de resistance, however, is the exclusive Johnnie Walker whisky room. Dubbed "the million-dollar room" on account of the value and rarity of the whiskies housed inside, it is the company's only bespoke in-office whisky room in the world and it requires an invitation to enter.