This is a statistics problem, so your hypothesis can be supported by careful choice of parameters and definitions. While the definition of "job" is fairly specific, "most" is a very vague parameter.
Since there are always more convenience store clerks than brain surgeons, and a brain surgeon could certainly make change, any brain surgeon could work in a convenience store, but other clerks have no business being in an operating room.
Since you are concerned with your area, define the boundaries of your area and who qualifies as an area resident. Then determine an upper boundary for "most" jobs, in terms of skill, education, or whatever you like. Next determine how many people in your sample area could perform these jobs in a satisfactory way. You'll need to choose a percentage of the sample to qualify as "most".
There are those who do not consider economics to be science because any result can be obtained by judicious choice of data.