Die mediese fonds en Werkloosheidsversekeringsfonds is op die salarisstrokie.

Because Afrikaans does not change the present-tense form of to be for singular and plural the way English does.

In English:

• The fund is
• The funds are

In Afrikaans:

• Die fonds is
• Die fondse is

So is is correct even when the subject is plural or made up of two nouns joined by en.

Die means the.

A useful thing to remember is that Afrikaans uses die for both singular and plural definite nouns:

• die fonds = the fund
• die fondse = the funds

So unlike English, you do not change the article.

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:

• the medical fund and Unemployment Insurance Fund

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:

• medies = medical
• mediese fonds = medical fund

This is very common in Afrikaans:

• groot huis is an exception pattern
• mooi dag
• mediese verslag

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:

• werkloosheid = unemployment
• versekering = insurance
• fonds = fund

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:

• general noun: usually lowercase
• official name of an institution: often capitalized

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:

• mediese fonds usually refers to a medical aid or health fund
• Werkloosheidsversekeringsfonds refers to the Unemployment Insurance Fund

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:

• on the payslip
• on the form
• on the page

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:

• salary slip
• pay slip
• payslip

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:

• Die mediese fonds en Werkloosheidsversekeringsfonds = subject
• is = verb
• op die salarisstrokie = place/location phrase

This is very standard Afrikaans word order.

If you wanted to emphasize the location, you could also move it to the front:

• Op die salarisstrokie is die mediese fonds en Werkloosheidsversekeringsfonds.

But the original version is the most straightforward.

Yes. The word en joins the two nouns, so the sentence says that both the mediese fonds and the Werkloosheidsversekeringsfonds are on the payslip.

So the structure is:

• item 1
• en
• item 2
• is op die salarisstrokie

In other words, the final part applies to both items together.