Effectivity or full employment?

A funny thing we have noticed on the buses is the amount of people working on them. In Finland we have one guy, the driver, who takes care of everything, but here there are three people working on a bus. Sometimes it feels a bit idiotic when there is first one guy who walks along the aisle and sells tickets to people, and a meter behind him comes another guy who checks everybody's tickets and draws a line on the ticket with a pen. And then of course we have the driver, the motorista, who just drives (sometimes like a lunatic I might add). And none of these three guys seem to know anything about buses and their engines, because when the bus brakes down (and it seems to be quite common that it does), a fourth guy needs to be fetched from somewhere to fix it.

The men (only once have I seen a woman working on a bus so far) working on the bus are always really well dressed; ironed pants, white shirt and a tie. Somehow it seems that they try to make people feel that it is a bit "upper class" to ride a bus. So maybe it is in order to make the service and the effectivity as good as possible that they have so many guys working on the buss?

Or then they just let Jorge draw a line on everybody's ticket in order for him to have a job at all?

Or then it might be too stressful for Jorge to both sell the ticket and draw a line over it?

Who knows?