Die werknemernommer is op die salarisstrokie.

Because die is the Afrikaans definite article, meaning the.

So in this sentence:

• die werknemernommer = the employee number
• die salarisstrokie = the payslip

Afrikaans uses die for singular and plural nouns, and it does not change for grammatical gender. That is much simpler than in languages like German or Dutch.

Afrikaans usually writes compound nouns as one word.

Here:

• werknemer = employee
• nommer = number

So werknemernommer literally means employee number.

This is very normal in Afrikaans. English sometimes writes these as two words, but Afrikaans often joins them.

It is more like employee number, but in meaning it can overlap with the employee's number depending on context.

Afrikaans often expresses this kind of relationship by making a compound noun instead of using an apostrophe construction. So:

• werknemernommer = employee number / employee ID number

It does not sound strange in Afrikaans to pack that meaning into one word.

Is is the present-tense form of wees, which means to be.

So here:

• Die werknemernommer is ... = The employee number is ...

A useful thing to know is that Afrikaans uses is with all persons in the present tense:

• ek is = I am
• jy is = you are
• hy/sy is = he/she is
• ons is = we are
• julle is = you are
• hulle is = they are

Op usually means on.

So:

• op die salarisstrokie = on the payslip

In English, on the payslip sounds natural, and that is also the basic idea in Afrikaans: the number appears on that document.

Salarisstrokie means payslip or pay slip.

It is made up of:

• salaris = salary
• strokie = little strip/slip

So the word literally suggests something like a salary slip.

In everyday usage, though, you should just understand it as the normal word for payslip.

The ending -ie is a very common Afrikaans diminutive ending.

Here, strokie is related to strook, meaning strip or slip. The diminutive form often becomes the standard everyday word in Afrikaans, so it does not always feel especially small or cute.

So even though -ie is technically diminutive, salarisstrokie is simply the ordinary word for payslip.

In this simple sentence, yes, it is very similar to English:

• Die werknemernommer = subject
• is = verb
• op die salarisstrokie = prepositional phrase

So the structure is:

Subject + verb + place/location phrase

That said, Afrikaans is a verb-second language, so in other sentence patterns the word order can shift more than it does in English. But this particular sentence is straightforward.

In normal Afrikaans, you would usually keep die here if you mean the payslip:

• op die salarisstrokie = on the payslip

Without die, it would generally sound incomplete or unnatural in this sentence.

If you wanted an indefinite meaning, you would use 'n:

• op 'n salarisstrokie = on a payslip

Yes, that is the normal meaning.

Die werknemernommer is op die salarisstrokie means that the employee number appears on the payslip, usually as printed or shown information.

So op here is not abstract or idiomatic in a complicated way. It simply tells you where the information can be found.