Comment by VoxPelli

Both, unlike in the US the Swedish post office is privatized and handled by multiple companies, eg Citymail also offers postal services.

PostNord has won the tender with the Swedish transport authority though and as such is the one they should use.

PostNord is the result of the merger between the privatized (but state owned) Swedish and Danish postal services.

But also – union rights and postal rights needs to be weighed against each other here – both are important