Poslodavac će zasnovati radni odnos na neodređeno vreme.

Će zasnovati is the future tense in Serbian.

It is formed with:

• the clitic će = will
• the infinitive zasnovati = to establish / to enter into / to conclude (depending on context)

So:

• poslodavac će zasnovati = the employer will establish / will enter into

In everyday Serbian, future tense is often made this way:

• Ja ću raditi = I will work
• On će doći = He will come

In this sentence, the verb sounds formal and legal, which is very common in employment-related Serbian.

Because zasnovati radni odnos is a set legal expression in Serbian.

It does not literally mean just to start in a casual sense. In legal or administrative language, zasnovati radni odnos means:

• to establish an employment relationship
• in natural English, often simply to hire someone / to enter into employment

So although početi means to begin, it would not normally be used in this formal employment phrase.

This is a good example of a collocation you should learn as a whole:

• zasnovati radni odnos

Radni odnos is another formal/legal expression. Literally, it means working relationship or employment relationship.

In practice, it usually refers to:

• being employed under an official employment contract
• a formal employee-employer relationship

So it is broader and more legal than just job.

Compare:

• posao = job, work
• radno mesto = position, workplace role
• radni odnos = legal employment relationship

In labor law texts, radni odnos is extremely common.

Na neodređeno vreme means for an indefinite period or for an indefinite term.

This is also a fixed employment expression:

• na određeno vreme = for a fixed term
• na neodređeno vreme = for an indefinite term / permanent

Grammatically:

• na here means something like for
• neodređeno is an adjective meaning indefinite / unspecified
• vreme means time / period

So literally it is something like:

• for indefinite time

But in natural English employment language, this usually corresponds to:

• permanent employment
• open-ended employment

Because the preposition na can take different cases depending on meaning, and in this expression it takes the accusative.

Here:

• vreme is a neuter noun
• nominative singular: vreme
• accusative singular: vreme
  (same form as nominative)

The adjective agrees with it:

• nominative/accusative neuter singular: neodređeno

So:

• na neodređeno vreme

This whole phrase is best learned as a set expression.

Poslodavac is in the nominative singular because it is the subject of the sentence.

It means employer.

So:

• Poslodavac = the employer
• će zasnovati = will establish / will enter into
• radni odnos = employment relationship

The subject is the one performing the action, so nominative is expected here.

Radni odnos is in the accusative singular, because it is the direct object of the verb zasnovati.

For masculine inanimate nouns, the accusative often looks the same as the nominative:

• nominative: radni odnos
• accusative: radni odnos

So even though the form does not change, its role in the sentence is accusative.

You can think of it as:

• zasnovati šta? → radni odnos
• establish what? → employment relationship

Zasnovati is perfective.

That matters because Serbian often uses:

• perfective verbs for completed, one-time actions
• imperfective verbs for ongoing, repeated, or general actions

Here the idea is a single completed legal act:

• the employer will establish the employment relationship

That is why the perfective verb fits well.

Its imperfective partner is typically:

• zasnivati

Compare:

• zasnovati = to establish once, to bring into existence
• zasnivati = to be establishing, to establish repeatedly/in general

In legal sentences about a formal act, the perfective form is very common.

Not usually in casual everyday conversation. It sounds formal, administrative, or legal.

A Serbian speaker in ordinary speech might say something more natural like:

• Zaposliće ga za stalno. = They will hire him permanently.
• Dobiće ugovor za stalno. = He/She will get a permanent contract.

But in contracts, regulations, HR documents, and legal texts, phrases like:

• zasnovati radni odnos
• na neodređeno vreme are very normal.

So this sentence is absolutely correct, but stylistically it belongs to formal Serbian.

Yes. Serbian word order is more flexible than English word order, although not completely free.

This sentence could also appear as:

• Poslodavac će na neodređeno vreme zasnovati radni odnos.
• Radni odnos će poslodavac zasnovati na neodređeno vreme.

However, the original order sounds natural in formal writing:

• Poslodavac će zasnovati radni odnos na neodređeno vreme.

The clitic će usually appears in the second position of the clause, which is an important Serbian pattern:

• Poslodavac će ...

So while other parts can move for emphasis or style, će tends to stay in that second-position slot.

Often yes in meaning, but not always literally.

In employment context, na neodređeno vreme usually means:

• for an indefinite term
• on a permanent basis
• as a permanent job/contract

So permanently may be a good natural translation in some cases, but the Serbian phrase is more specifically about the duration of the contract not being fixed in advance, rather than about something lasting forever in an absolute sense.

That legal nuance is important.

Serbian has no articles like a/an/the.

So poslodavac can mean:

• an employer
• the employer

You understand which one is intended from context.

In a legal or contractual sentence like this, poslodavac often means the employer, because the parties are already defined by the document.

This is very common in Serbian:

• Radnik potpisuje ugovor. = The worker signs the contract / A worker signs a contract, depending on context.

Yes — probably these chunks:

• poslodavac = employer
• radni odnos = employment relationship
• zasnovati radni odnos = to establish/enter into an employment relationship
• na određeno vreme = for a fixed term
• na neodređeno vreme = for an indefinite term / permanent

These fixed expressions are more useful than translating each word separately every time. In formal Serbian, especially labor-law Serbian, learning the whole phrase will help you much more.