In this sentence, Werkloosheidsversekeringsfonds is being treated like the name of a specific institution, so it does not need a second die.
Afrikaans often does this with names and official terms. The sentence is understood as:
You could sometimes see the article repeated for clarity in other contexts, but here leaving it out is natural.
Because Afrikaans adjectives usually take an -e ending when they come before a noun.
So the adjective medies becomes mediese before fonds:
This is very common in Afrikaans:
So mediese fonds is the normal attributive form.
Because Afrikaans, like Dutch and German, very often joins nouns together into one compound word.
This long word can be broken into parts:
Together they form one compound noun: Werkloosheidsversekeringsfonds.
This is completely normal in Afrikaans. English often uses several separate words where Afrikaans prefers one compound word.
Afrikaans does not capitalize all nouns the way German does. Normally nouns are lowercase.
Here it is capitalized because it is being used as the name of a specific official body, not just as a general noun. In other words, it is functioning like a proper name.
So:
Fonds means fund, but in real-life South African usage it can refer to an official scheme or contribution system, not just a pile of money.
In this sentence:
So fonds here is more institutional than literal.
It means that these items appear or are listed on the payslip.
So op here works much like English on in:
It does not necessarily mean something physically sitting on top of something else. It often means shown on or recorded on a document.
Because Afrikaans commonly forms compound nouns as single words.
English often writes:
Afrikaans strongly prefers one compound word for this kind of idea. That is why the word is written as a single unit rather than as two separate words.
The sentence follows the normal Afrikaans main-clause pattern:
Subject + verb + rest
So here you have:
This is very standard Afrikaans word order.
If you wanted to emphasize the location, you could also move it to the front:
But the original version is the most straightforward.