An activity for the class to brainstorm reasons why you would choose a career. Some examples: salary, benefits, where you would work, university degree, etc. You can brainstorm in English but also make sure that they find the French vocabulary word for the idea too. I give some students an iPad with a French dictionary on it and the class takes turns being in charge of looking up the word. You can also use dictionaries.
After you brainstorm some ideas in class and have them also in French, students can number the boxes from 1-16 (1 being most important).
Once they have the boxes numbered, they can put their priorities in order on the ladder. If not enough room to write in the middle of the ladder pegs, they can write on the sides of the page and just draw an arrow to each ladder step.