In California only, you need a business license to operate as an independent contractor in any capacity, including as a gig worker. This license confirms you’re a service provider and not an employee of the company (which keeps TaskRabbit out of legal hot water). You can get a license as a sole proprietor (i.e. a solo person), so you don’t have to form a business entity like an LLC. No other states require a business license to work for TaskRabbit.