Solved with traditional pt jobs, not so much when you join at will.  I may work today but because exams, vacation, etc, might not get back in till weeks from now.  Maybe I want to just try out a job.<p>Thjs kind of dipping in and out does not work for a restaurant whose work demand is inelastic.  It works for the übers because its elastic.  One gal or guy not coming in doesn&#x27;t cause mayhem in the shift.  Surge pricing also helps.  You&#x27;re not going to tolerate surge pricing at restaurants, for example.<p>So the work demand is different, it&#x27;s much more flexible and you need a classification which allows for dabblers, people who might work for five or ten different outfits one week, none the next and one the third.