Less efficient or less profitable? Also I'm gonna need to see some references for those claims in your last paragraph.
Funnily enough it's the couriers working for the private companies that I see looking more and more dead inside recently.
So, yknow, anecdote for an anecdote.
I would say both less efficient and less profitable.
If you're saying FedEx people are also depressed, then maybe it's just delivering boxes that's the problem?
But I think it's pretty safe to say that there is nobody more pissed off than post office workers. Are they nice in Estonia? Luckily I do most stuff online nowadays but when I have to go to the post office it's always an awful experience.