Na poslu se takve stvari događaju češće nego kod kuće, ali sada me više ne iznenađuju.

In Croatian, na poslu is the normal idiomatic way to say at work or at the workplace.

• na + locative often appears in set expressions for activities or institutions: na poslu (at work), na fakultetu (at university), na moru (at the seaside).
• u poslu usually would not mean the same thing. It can sound more like in the middle of work or engaged in work, depending on context.

So here na poslu is simply the natural expression.

Poslu is in the locative singular of posao (job, work). It is used because of the preposition na in the meaning of location:

• na poslu = at work

The noun changes like this:

• nominative: posao
• genitive: posla
• locative: poslu

The verb događati se means to happen. In Croatian, this verb normally appears with se.

So:

• događa se = it happens
• događaju se = they happen

This se is part of the verb expression, not a separate idea like himself/herself in English.

Because the subject is plural: takve stvari (such things).

Croatian verbs agree with the subject in number:

• takva stvar se događa = such a thing happens
• takve stvari se događaju = such things happen

So događaju is 3rd person plural present.

Takve agrees with stvari in gender, number, and case.

Here stvari is:

• feminine
• plural
• nominative (because it is the subject)

So the adjective/determiner must match:

• singular feminine: takva stvar
• plural feminine: takve stvari

That is why you get takve.

Stvari literally means things. In this sentence, it refers to events, situations, or incidents in a general sense.

So takve stvari is a very common phrase meaning:

• such things
• things like that
• that kind of thing

It is a broad, natural expression in Croatian, just like in English.

Češće is the comparative form of često (often), so it means more often.
Nego means than in comparisons.

So:

• često = often
• češće = more often
• češće nego kod kuće = more often than at home

This is a standard comparison pattern in Croatian:

• brže nego prije = faster than before
• više nego jučer = more than yesterday
• češće nego kod kuće = more often than at home

Kod kuće is the normal idiomatic way to say at home.

• kod kuće = at home
• u kući = in the house

These are not always the same.
For example:

• Danas sam kod kuće. = I am at home today.
• Djeca su u kući. = The children are in the house.

In your sentence, the idea is at home in general, so kod kuće is the natural choice.

After kod, Croatian uses the genitive case.

So:

• kuća = house, home
• kod kuće = at home

This expression is fixed and very common, so it is worth learning as a whole phrase.

Croatian often leaves out subject pronouns when the verb ending already shows who or what the subject is.

Here:

• događaju already shows they happen
• iznenađuju already shows they surprise

Also, the noun subject takve stvari is already present, so adding one would usually be unnecessary.

Croatian does this very often:

• Radim. = I work.
• Idemo. = We are going.
• Takve stvari se događaju. = Such things happen.

Because iznenaditi / iznenađivati takes a direct object meaning the person who is surprised.

In English, we say:

• These things surprise me

In Croatian, the same logic applies:

• Te stvari me iznenađuju.

So me is the accusative clitic meaning me.

The structure is:

• takve stvari = subject
• me = direct object
• iznenađuju = surprise

Literally: Such things surprise me.

Here više ne means no longer or not anymore.

So:

• sada me više ne iznenađuju = now they no longer surprise me

Even though više often means more, in combination with negation it very often means:

• ne više / više ne = no longer, not anymore

Examples:

• Ne radim više ovdje. = I no longer work here.
• Više ga ne viđam. = I don’t see him anymore.

So in this sentence, više ne is a time-related idea, not a comparison.

Croatian has fairly flexible word order, but short unstressed words called clitics tend to go near the beginning of the clause.

Here:

• me = clitic pronoun
• ne = clitic negation-like particle attached to the verb phrase

So me više ne iznenađuju is a natural order.

You may also hear slightly different emphasis patterns in Croatian, but this version sounds normal and smooth. The important point is that me comes early, and ne stays with the verb.

Again, because the subject is plural: takve stvari.

• Takva stvar me više ne iznenađuje. = Such a thing no longer surprises me.
• Takve stvari me više ne iznenađuju. = Such things no longer surprise me.

The verb must agree with the subject, so plural subject = plural verb.

Both verbs are in the present because the sentence describes a general truth/current situation:

• Na poslu se takve stvari događaju češće nego kod kuće = this happens generally
• sada me više ne iznenađuju = now they do not surprise me anymore

Croatian uses the present tense here just as English does in sentences like:

• These things happen more often at work
• They don’t surprise me anymore

Yes. Both are imperfective forms, which fits the meaning here.

• događati se = to be happening / to happen repeatedly
• iznenađivati or present iznenađuju can express repeated or ongoing effect: they surprise

This sentence is about repeated, typical situations, not one single completed event. That is why imperfective forms are appropriate.

If you were talking about one specific event, Croatian might prefer a perfective verb in a past or future context.

Because ali means but, and in Croatian it normally introduces a new clause that is separated by a comma.

So the sentence has two main parts:

1. Na poslu se takve stvari događaju češće nego kod kuće
2. ali sada me više ne iznenađuju

The comma marks that contrast clearly, just as in English:

• ..., but now they no longer surprise me.