ibLE "Invisible PA" company ibLE offers pay-as-you-go remote PAs at £35 an hour. The PAs are paid around £45,000 a year and can work from anywhere in the world. Co-founder Emma Hatto told Business Insider it's a "lucrative" career — and a day can involve anything from planning a celebrity bash to simply answering a few emails. Gone are the days of the desk-bound, dedicated secretary who sits outside your office screening your calls and fetching your coffee. Now, it's all about having a flexible personal assistant, or PA — and sometimes you'll never even see them.See the rest of the story at Business InsiderNOW WATCH: How 'leftover' women in China are changing its cultureSee Also:What it's like to fly in Air Canada's business class 'executive pods,' complete with lie-flat beds, a remote that lets you order food, and lighting that claims to help with jet lagInside London's Harry Potter-style bar where you mix your own cocktails in a cauldron and pour beers using a magic wandAn overseas billionaire is renting a London mega-mansion for £1 million a year so he can try it before he buys itSEE ALSO: Meet the pay-as-you-go PAs who get super-rich clients into Eton, charter choppers to Glastonbury, and ghost-proof mansions