La empleada trabajadora termina el trabajo.

Because empleada is the feminine singular form of the noun. It refers to one female employee, so Spanish uses the feminine article la and the feminine noun ending -a.

• Masculine: el empleado
• Feminine: la empleada

If the employee were male, the sentence would begin El empleado...

In Spanish, descriptive adjectives usually come after the noun. Here, trabajadora describes empleada, so empleada trabajadora means a hardworking employee.

Putting the adjective before the noun is sometimes possible in Spanish, but it often changes the tone or emphasis. In this sentence, the normal order is noun + adjective.

Here it is most naturally understood as an adjective, meaning hardworking.

That said, trabajadora can also be a noun meaning female worker. So this word can do two jobs:

• noun: La trabajadora llegó temprano. = The female worker arrived early.
• adjective: La empleada trabajadora... = The hardworking employee...

Context tells you which meaning is intended.

Because Spanish uses agreement. The article, noun, and adjective all have to match in gender and number.

Here the subject is:

• one person → singular
• female → feminine

So the phrase becomes:

• la = feminine singular article
• empleada = feminine singular noun
• trabajadora = feminine singular adjective

If it were plural, you would say Las empleadas trabajadoras...

Termina is the present tense, third-person singular form of terminar.

It matches la empleada, which is a third-person singular subject.

• terminar = infinitive, to finish
• termina = finishes / is finishing
• terminó = finished

So La empleada trabajadora termina el trabajo is in the present tense.

Because grammatical gender belongs to each noun individually. The gender of trabajo does not depend on the gender of empleada.

• empleada is feminine → la empleada
• trabajo is masculine → el trabajo

This is very common in Spanish. A feminine subject can act on a masculine object, or the other way around.

They are related to the idea of work, but they are different parts of speech.

• trabajo = noun = work / job
• trabajadora = adjective here = hardworking
• trabajar = verb = to work

So even though they look similar, they do different jobs in the sentence.

It is grammatical, but it can sound a little stiff or repetitive because empleada and trabajadora are close in meaning.

Depending on what you want to say, Spanish speakers might more naturally use:

• La empleada termina el trabajo.
• La empleada es trabajadora.
• La trabajadora termina el trabajo.

Also, if you mean her work, su trabajo may sound more natural than el trabajo in some contexts.

Both are possible, but they mean slightly different things.

• el trabajo = the work / the task
• su trabajo = her work / her job

So termina el trabajo suggests she finishes a specific piece of work or task.
termina su trabajo makes it clearer that it is her own work.

Yes. Spanish often leaves out the subject when it is already clear from context.

So you could say:

• Termina el trabajo.

That is possible because termina already tells you it is he/she/it in the present tense. Spanish does this much more often than English.

In your sentence, the subject is included because the speaker wants to name exactly who is finishing the work: la empleada trabajadora.

Yes. In many contexts, empleada simply means female employee, but in some regions and situations it can also suggest a domestic employee or maid, especially if the context is about a household.

If you want a more general word for worker/employee, context matters, and sometimes speakers may choose words like:

• empleada
• trabajadora
• empleada de oficina
• empleada doméstica

So the sentence is understandable, but the exact nuance of empleada can depend on context.