If you don't want to work for a year then just quit your job and then get a new job later. But it's ridiculous and unrealistic to think that an employer should hold your job open for a year. How are they supposed to get work done during that period, hire a temporary employee and then lay them off when you decide to return?

If you want that lifestyle then just become an independent consultant rather than an employee. I know a married couple who does that. They work for a while to save up enough money, then take off and sail their boat around until they run low on money and have to find new consulting gigs.