They dig their own holes
He goes on about how being a construction worker there differs from being one in SA. A "construction worker" in SA pretty much just supervises the black labourers (who are the actual construction workers). This is also the case with miners for instance. A miner doesn't dig out the gold himself; he supervises the black people doing it.
When I asked my mother-in-law for some advice to clean the mildew in the bathroom she said "I use Handy Andy every month to prevent it from growing". Just a tat curious I asked my boyfriend if his mother actually used the Handy Andy herself or if she got the maid to do it. "No of course she doesn't di it herself", he answered slightly annoyed about the fact that I asked questions ' I already knew the answer to'.
* A derogatory name for black people
** Black Economic Empowerment (a system of positive discrimination for black people to undo wrongs of the past)