Das Arbeitszeitkonto zeigt meine Überstunden.

German very often combines nouns into a single compound noun. Arbeitszeitkonto is made up of:

• Arbeit = work
• Arbeitszeit = working time / work hours
• Konto = account

So Arbeitszeitkonto is literally a work-time account, meaning a record or balance of your working hours. In English, we usually write this as separate words, but in German it is normal to join them into one noun.

In German, the gender of a compound noun is determined by the last part of the word. Here, the last part is Konto, and Konto is neuter:

• das Konto

So the whole compound is also neuter:

• das Arbeitszeitkonto

This is a very useful rule for compound nouns in German.

It is in the nominative case because it is the subject of the sentence — the thing doing the action.

In this sentence:

• Das Arbeitszeitkonto = the subject
• zeigt = the verb
• meine Überstunden = the object

So the structure is:

• The working-time account shows my overtime hours

zeigt is the 3rd person singular form of the verb zeigen (to show).

The subject is das Arbeitszeitkonto, which is singular, so the verb must match it:

• ich zeige
• du zeigst
• er/sie/es zeigt
• wir zeigen
• ihr zeigt
• sie/Sie zeigen

Because das Arbeitszeitkonto is grammatically like es, the correct form is zeigt.

German main clauses normally follow the verb-second rule. That means the conjugated verb comes in the second position.

Here the first element is:

• Das Arbeitszeitkonto

So the verb comes next:

• Das Arbeitszeitkonto zeigt ...

This is one of the most important sentence patterns in German.

Überstunden here is the direct object of zeigt, so it is in the accusative case.

The noun Überstunden is plural, and the possessive mein- must agree with it. In the accusative plural, the correct form is:

• meine

So:

• meine Überstunden = my overtime hours

Compare:

• nominative plural: meine Überstunden
• accusative plural: meine Überstunden

In plural, nominative and accusative often look the same.

It is in the accusative case because it is the thing being shown.

The verb zeigen often takes a direct object:

• jemanden / etwas zeigen = to show someone / something

Here, what is being shown?

• meine Überstunden

So that phrase is the accusative object.

Usually, yes, it is very often used in the plural because overtime is commonly thought of as extra hours.

Forms:

• singular: die Überstunde
• plural: die Überstunden

In real-life German, the plural is much more common, especially in work-related contexts:

• Ich habe viele Überstunden.
• Meine Überstunden werden erfasst.

The singular is possible, but less common unless you are talking about one specific overtime hour.

The plural noun Überstunden already has its normal plural form here. In the accusative plural, many German nouns look the same as in the nominative plural.

So:

• nominative: die Überstunden
• accusative: die Überstunden

What changes more clearly is often the article or determiner, but here meine is also the same in nominative and accusative plural. That is why the whole phrase looks unchanged.

An Arbeitszeitkonto is a system or record that tracks a person’s work hours. It can show things like:

• regular hours worked
• overtime
• extra hours saved up
• hours still owed
• flexitime balances

So it is not a bank account, even though Konto often means account. Here it means a recorded balance of work time.

Yes. That means My working-time account shows my overtime hours.

Both are correct:

• Das Arbeitszeitkonto zeigt meine Überstunden.
  This sounds more general, like the working-time account.

• Mein Arbeitszeitkonto zeigt meine Überstunden.
  This emphasizes that it is my account.

Which one you choose depends on context.

Yes, but the verb still has to stay in second position in a main clause.

For example:

• Meine Überstunden zeigt das Arbeitszeitkonto.

This is grammatically possible, but it sounds marked or emphasizes meine Überstunden. The neutral, standard order is:

• Das Arbeitszeitkonto zeigt meine Überstunden.

So learners should usually stick with the original order unless they have a reason to emphasize something.

Yes, zeigen is natural and common for something on a screen, system, document, or account display.

Depending on context, German could also use verbs like:

• ausweisen = to indicate / show officially
• anzeigen = to display
• aufführen = to list

But zeigt is simple, clear, and completely natural in this sentence.

You can tell from two things:

1. the article das
2. the verb form zeigt

If it were plural, you would expect:

• die Arbeitszeitkonten
• zeigen

So compare:

• Das Arbeitszeitkonto zeigt ... = singular
• Die Arbeitszeitkonten zeigen ... = plural

The plural is:

• die Arbeitszeitkonten

So you could say:

• Die Arbeitszeitkonten zeigen meine Überstunden.

That would mean multiple working-time accounts are showing the overtime hours.

Yes. meine is a possessive determiner meaning my, so it already shows that the overtime belongs to the speaker.

German does not need an ich here because the ownership is already clear from:

• meine Überstunden = my overtime hours

So even without ich, the sentence still refers to the speaker’s overtime.