Bezbednost na radu je važna.

Na radu uses the locative case.

• The preposition na can take different cases depending on meaning.
• Here it means at work / on the job, which is a location or situation, so Serbian uses the locative.
• The noun rad becomes radu in the locative singular.

So:

• rad = work
• na radu = at work / on the job

This is a very common fixed expression in Serbian.

Because it agrees with bezbednost, which is a feminine singular noun.

In Serbian, adjectives must agree with the noun they describe in:

• gender
• number
• case

Here:

• bezbednost = feminine singular
• so the adjective must also be feminine singular: važna

Compare:

• važan = masculine
• važno = neuter
• važna = feminine

That is a very common learner question. In Serbian, many nouns ending in -ost are feminine, even though they do not end in -a.

Examples:

• bezbednost = safety
• mogućnost = possibility
• budućnost = future
• mladost = youth

So bezbednost is feminine, which is why we get važna.

Je is the 3rd person singular present tense of the verb biti (to be).

So:

• je = is

The sentence structure is:

• Bezbednost na radu = the subject
• je važna = is important

Unlike in Russian or some other Slavic languages, Serbian normally does use the present-tense form of to be in sentences like this.

Yes. Serbian word order is fairly flexible.

The neutral order here is:

• Bezbednost na radu je važna.

But you could also say:

• Važna je bezbednost na radu.

That version puts more emphasis on važna (important).

So the original sentence is the most straightforward, neutral way to say it, but other word orders are possible for emphasis or style.

Because na radu is the natural Serbian expression for at work / in the workplace / on the job.

• na radu = at work
• u radu usually means something more like in the work/process of working, and it would not sound natural here for workplace safety.

So if you mean occupational safety or safety at work, na radu is the normal choice.

Yes, very much so.

Bezbednost na radu is a standard phrase meaning:

• occupational safety
• workplace safety
• safety at work

You will see it in official language, workplace rules, training materials, and legal contexts.

A closely related phrase is:

• zaštita na radu = protection at work / occupational protection

Depending on context, both may appear, but bezbednost na radu is perfectly natural and standard.

You might hear or understand it, but bezbednost na radu is the more standard Serbian phrasing for safety at work.

A few notes:

• bezbednost strongly matches the idea of safety/security
• sigurnost can also mean safety, but often also certainty, security, confidence

So in this context, bezbednost na radu is the safest and most idiomatic choice in Serbian.

It is in the nominative singular.

Why?

Because it is the subject of the sentence:

• Bezbednost na radu = safety at work

In a sentence like X is important, the thing that is something is usually in the nominative.

So:

• bezbednost = nominative singular feminine

It describes bezbednost, not radu.

The sentence breaks down like this:

• Bezbednost na radu = workplace safety / safety at work
• je važna = is important

Even though na radu comes right after bezbednost, it is just a prepositional phrase modifying the noun. The adjective važna still agrees with the main noun bezbednost.

In Serbian Cyrillic, it is:

Безбедност на раду је важна.

Serbian commonly uses both scripts:

• Latin: Bezbednost na radu je važna.
• Cyrillic: Безбедност на раду је важна.

Both are correct in Serbian.

A simple approximate pronunciation for an English speaker is:

BEZ-bed-nost na RA-doo ye VAZH-na

A few useful notes:

• je sounds like ye
• ž sounds like the s in measure
• radu is roughly RA-doo
• Serbian spelling is quite phonetic, so words are usually pronounced close to how they are written

You do not need perfect pitch accent to be understood, especially as a beginner.