Klageren påklager enkeltvedtaket.

Klageren is the definite singular form of the noun klager.

• en klager = a complainant
• klageren = the complainant

In Norwegian, the definite article is usually added to the end of the noun rather than written as a separate word.

That is a normal feature of Norwegian. Instead of putting a separate word before the noun, Norwegian often uses a suffix:

• en klager → klageren
• et vedtak → vedtaket

So in this sentence:

• klageren = the complainant
• enkeltvedtaket = the individual decision

English uses a separate article, but Norwegian often builds definiteness into the noun itself.

Påklager is the present tense of the verb å påklage.

A few forms are:

• å påklage = to appeal / to challenge formally
• påklager = appeals / challenges
• påklaget = appealed / challenged

So the sentence uses present tense: the complainant appeals the decision.

Because they are related to the same root idea: klage.

• å klage = to complain
• en klager = a complainant
• å påklage = to appeal formally, especially in administrative or legal language

The prefix på- creates a different verb. So although the words look similar, they do not have exactly the same meaning.

A useful contrast is:

• å klage på noe = to complain about something
• å påklage noe = to appeal something formally

Because å påklage normally takes a direct object.

So Norwegian says:

• påklage enkeltvedtaket

not:

• påklage på enkeltvedtaket

This is an important difference from å klage på, which does use the preposition på:

• klage på vedtaket = complain about the decision
• påklage vedtaket = appeal the decision

Both can be translated similarly in some contexts, but the grammar is different.

It is a compound noun, which is extremely common in Norwegian.

It is built from:

• enkelt = single / individual
• vedtak = decision, ruling

Together, enkeltvedtak is a fixed legal or administrative term meaning an individual administrative decision.

Norwegian usually writes compounds as one word, where English often uses two words or a phrase. So writing enkelt vedtaket would be wrong here.

Because enkeltvedtak is a neuter noun.

• et enkeltvedtak = an individual decision
• enkeltvedtaket = the individual decision

In Norwegian compounds, the last part usually determines the gender. Here the last part is vedtak, which is neuter, so the definite ending is -et.

Because the sentence is talking about a specific complainant and a specific decision.

• klageren = the complainant
• enkeltvedtaket = the individual decision

This is very natural when the people involved already know which complainant and which decision are meant, especially in legal or administrative writing.

If the sentence were more general, you could have indefinite forms such as:

• En klager påklager et enkeltvedtak

That would mean something more like a complainant appeals an individual decision, which sounds much less specific.

The word order is completely normal for a Norwegian main clause:

Subject + verb + object

• Klageren = subject
• påklager = verb
• enkeltvedtaket = object

It also fits the Norwegian verb-second pattern. In a main clause, the finite verb normally comes in the second position. Since the subject comes first here, the verb naturally comes next.

For example:

• Klageren påklager enkeltvedtaket
• I dag påklager klageren enkeltvedtaket

In both sentences, the finite verb påklager is in second position.

It is correct Norwegian, but it sounds formal and especially legal/administrative.

Words like påklage and enkeltvedtak are common in official documents, letters from public authorities, and legal contexts.

In more everyday speech, people might say something less formal depending on the exact situation, such as:

• Klageren klager på vedtaket
• Han eller hun klager på avgjørelsen

So the sentence is natural, but it belongs more to an official register than casual conversation.