France has something similar: congé création d’entreprise, up to 1 year (renewable once adding an additional year). Also, if you’ve worked in the private secto

France has something similar: congé création d’entreprise, up to 1 year (renewable once adding an additional year). Also, if you’ve worked in the private sector for 6 cumulative years, you’re entitled to an unpaid sabbatical of up to 11 months, and you get to keep your job when you go back.