Ok - thank you, I will look, @happydolphin.
I do not think it was anything I said. The first officer pulled me out just be seeing my paperwork and asking how long I will stay - that info is on the paperwork already.
The workers are under a whole different scheme, and they are either Malaysian or Singapore citizens, unlike me. I'm a foreigner on a tourist visa.
I got to ride in the free worker border crossing bus which was very nice. Normally I am in the bus I paid for.