High wages and efficiency

I was talking to my roommate about how expensive it is to do things here if we used Canadian wages. For example, at the office we need to take letters of invitation to the offices we work with personally because there are no cheap courier services or a culture of using email for communication. For a formal meeting where I have to deliver letters to 4 or 5 offices, it would take me almost a whole day of work. That, would be very expensive in Canada from the employers point of view.

That led me to wonder if increasing wages give incentive for more efficient functioning. Or maybe it’s the separation of tasks which lead to efficiency which leads to higher wages? Am I confusing cause and effect?