Medarbetaren arbetar självständigt.

In Swedish, the definite article is usually added to the end of the noun.

So:

• medarbetare = employee / co-worker
• medarbetaren = the employee / the co-worker

Here, -en marks the noun as definite. Swedish often does this instead of putting a separate word before the noun.

A useful extra point: if there is an adjective before the noun, Swedish often uses both a separate article and the ending:

• den självständiga medarbetaren = the independent employee

But in your sentence, medarbetaren by itself already means the employee.

The basic form is medarbetare.

This noun is a little tricky because the indefinite singular and indefinite plural are the same form:

• en medarbetare = an employee
• flera medarbetare = several employees

Then the definite forms are:

• medarbetaren = the employee
• medarbetarna = the employees

So in your sentence, medarbetaren is clearly singular definite.

Because arbetar is the present tense form of the verb arbeta.

• arbeta = to work
• arbetar = works / is working

In Swedish, the present tense of many verbs is formed with -r:

• att arbeta → arbetar
• att tala → talar
• att studera → studerar

So Medarbetaren arbetar means The employee works or The employee is working, depending on context.

Yes, but only a little.

• arbetar is neutral and slightly more formal
• jobbar is more everyday and conversational

Both are very common, and both can mean work.

So these are both natural:

• Medarbetaren arbetar självständigt.
• Medarbetaren jobbar självständigt.

The version with arbetar sounds especially natural in formal writing, reports, or evaluations.

Because in this sentence it is functioning as an adverb, meaning it describes how the employee works.

The base adjective is:

• självständig = independent

The adverbial form is:

• självständigt = independently

In Swedish, many adverbs have the same form as the neuter singular adjective, often ending in -t.

Compare:

• en självständig medarbetare = an independent employee
• ett självständigt barn = an independent child
• arbetar självständigt = works independently

So the -t here does not mean the employee is neuter. It is there because the word is being used adverbially.

Here, it is an adverb.

A quick way to see that is this: it describes the verb arbetar, not the noun medarbetaren.

It answers the question:

• How does the employee work?
• Självständigt = independently

If it were an adjective describing the employee directly, you would need something like:

• Medarbetaren är självständig. = The employee is independent.

So:

• arbetar självständigt = describes the way of working
• är självständig = describes the person’s quality

Yes, and it is close in meaning, but not exactly the same.

• Medarbetaren arbetar självständigt = The employee works independently
• Medarbetaren är självständig = The employee is independent

The first one focuses on behavior in work.
The second one describes a more general personal characteristic.

In an evaluation or workplace context, arbetar självständigt is often a bit more precise, because it specifically says how the person performs their work.

This is the normal Swedish main-clause order:

• Medarbetaren = subject
• arbetar = verb
• självständigt = adverb

So it follows the basic pattern:

Subject + verb + adverb

However, Swedish is a verb-second language, so if you move something else to the front, the verb still stays in second position:

• Idag arbetar medarbetaren självständigt. = Today the employee works independently.

Notice that arbetar still comes second.

To make it negative, add inte:

• Medarbetaren arbetar inte självständigt. = The employee does not work independently.

To make it a yes/no question, put the verb first:

• Arbetar medarbetaren självständigt? = Does the employee work independently?

That gives you a useful pattern:

• Statement: Medarbetaren arbetar självständigt.
• Negative: Medarbetaren arbetar inte självständigt.
• Question: Arbetar medarbetaren självständigt?