I am doing that quest on world 10, i am level 39.
You go to the junction in one of the north central Squares. White quest giver.
Accept the quest when you are there, it opens up the next part of the quest which is Trading with Indians for 9 hours, accept that quest when you are there or when you do the job without accepting it doesnt count towards the quest.
You then trade with indians for 9 hours, its the job that has a tee-pee as its icon. If you cant see it then like the others in this thread have said, you dont have enough labour points to do or see the job and should start to put points into the skills needed as Wert718 kindly posted and or equip some of the items he suggested and hopefully you will at least see the job and you will have an idea of how many points you are away from doing the job.