Ben işten erken çıkabilmek için işleri hızlıca bitiriyorum.

The sentence has two main parts:

• Ben işten erken çıkabilmek için = in order to be able to leave work early
• işleri hızlıca bitiriyorum = I am finishing the tasks quickly

So the overall pattern is:

[purpose] + [main action]

A very literal breakdown is:

• Ben = I
• işten = from work
• erken = early
• çıkabilmek = to be able to leave / get out
• için = for / in order to
• işleri = the tasks / the work items
• hızlıca = quickly
• bitiriyorum = I am finishing

Yes, ben can be omitted.

Turkish verbs already show the subject, and bitiriyorum means I am finishing, so the I is already built into the verb ending.

That means these are both possible:

• Ben işten erken çıkabilmek için işleri hızlıca bitiriyorum.
• İşten erken çıkabilmek için işleri hızlıca bitiriyorum.

Including ben can add emphasis, like:

• I’m the one finishing things quickly.
• As for me, I’m doing this to leave work early.

In neutral speech, Turkish often leaves ben out.

İşten is iş + -ten, and -ten/-den is the ablative case, often meaning from.

So:

• iş = work / job
• işten = from work / off work

In this sentence, işten çıkmak is a common expression meaning to leave work.

So:

• işten çıkmak = to leave work
• evden çıkmak = to leave the house
• okuldan çıkmak = to leave school

Without -ten, the meaning would not be complete here.

This is because of consonant assimilation in Turkish.

The ablative ending is basically -den/-dan, but after certain voiceless consonants it changes to -ten/-tan.

Since iş ends in ş, which is voiceless, you get:

• iş + den -> işten

This same pattern appears in:

• ağaçtan = from the tree
• kitaptan = from the book
• şehirden = from the city

So işten is the regular, correct form.

Çıkabilmek breaks down like this:

• çık- = leave / go out
• -abil- = be able to / can
• -mek = infinitive ending (to ...)

So çıkabilmek means:

• to be able to leave
• to be able to get out

This is slightly different from just çıkmak, which means simply to leave.

So compare:

• işten erken çıkmak için = in order to leave work early
• işten erken çıkabilmek için = in order to be able to leave work early

The version with -abil- adds the idea that something must happen first so that leaving early becomes possible.

Because Turkish often uses the infinitive + için pattern to express purpose.

The pattern is:

• Verb-mek / -mak için = in order to ...

Examples:

• öğrenmek için = in order to learn
• gitmek için = in order to go
• bitirmek için = in order to finish

So here:

• çıkabilmek için = in order to be able to leave

This is a very common and useful structure in Turkish.

Here, için means for or, more naturally in English, in order to.

It shows purpose.

So:

• işten erken çıkabilmek için = in order to be able to leave work early

In other contexts, için can also mean for in a more general sense:

• senin için = for you
• bu kitap çocuklar için = this book is for children

But in this sentence, it is specifically marking the reason or goal of the action.

İşleri is:

• iş = work / task / thing to do
• -ler = plural
• -i = accusative case

So işleri means something like:

• the tasks
• the things to do
• the work items

The accusative is used because this is a specific direct object of bitiriyorum.

Compare:

• iş bitiriyorum = I am finishing work / doing work-related finishing in a general sense
• işleri bitiriyorum = I am finishing the tasks / finishing the work that needs to be done

So işleri sounds more like there is a definite set of tasks to complete.

Hızlıca is an adverb meaning quickly.

• hızlı = fast / quick
• hızlıca = quickly

In Turkish, hızlı is primarily an adjective, while hızlıca is clearly adverbial here.

So:

• hızlı bir araba = a fast car
• hızlıca bitiriyorum = I finish quickly

You may also hear other adverbial options, such as:

• hızlı bir şekilde = in a quick way
• çabucak = quickly

Using hızlıca is natural and concise.

Bitiriyorum is the present continuous form:

• bitir- = finish
• -iyor = present continuous
• -um = I

So it literally means:

• I am finishing

In Turkish, this form is used not only for actions happening right now, but also for:

• current ongoing situations
• present habits in some contexts
• near-future or planned actions, depending on context

Here it sounds natural because the speaker is describing what they are currently doing for a purpose:

• I’m finishing the tasks quickly so I can leave work early.

The word order can change.

Turkish is fairly flexible, although the verb usually comes at the end. This sentence could also appear as:

• İşten erken çıkabilmek için işleri hızlıca bitiriyorum.

This version is probably even more natural in many contexts, because it starts directly with the purpose clause.

You could also move things around for emphasis, for example:

• İşleri hızlıca bitiriyorum, işten erken çıkabilmek için.

That sounds more marked and spoken. The most neutral versions are the ones with bitiriyorum at the end.

Because erken modifies the action of leaving.

So:

• erken çıkmak = to leave early

This is the normal placement. The adverb comes before the verb it modifies.

Similarly:

• geç gelmek = to come late
• yavaş konuşmak = to speak slowly
• hemen gitmek = to go immediately

So işten erken çıkabilmek means to be able to leave work early.

Yes, but the meaning changes slightly.

• işten erken çıkmak için = in order to leave work early
• işten erken çıkabilmek için = in order to be able to leave work early

The version with -abil- emphasizes possibility or having the chance/opportunity to leave early.

In this sentence, that makes good sense: the speaker is finishing tasks quickly so that leaving early becomes possible or allowed.

So both are grammatical, but çıkabilmek adds an extra nuance that English sometimes leaves unstated.