oneureun sigani isseoseo iljjik toegeunhaeyo.

Today I have time, so I leave work early.

Breakdown of oneureun sigani isseoseo iljjik toegeunhaeyo.

• ~이: subject particle
• ~은: topic particle
• 오늘: today
• 있다: to have
• 퇴근하다: to leave work
• 일찍: early
• ~어서: so / because
• 시간: hour / time

Questions & Answers about oneureun sigani isseoseo iljjik toegeunhaeyo.

Why is 오늘 followed by -은/는 (오늘은) instead of -이/가?

-은/는 marks the topic and often sets a contrast or context: As for today… / Today, (unlike other days)….
If you used 오늘이, it would sound more like Today (as the subject) is…, which doesn’t fit as naturally here unless you’re making a different kind of statement (e.g., 오늘이 제일 바빠요 = Today is the busiest).

What does 시간이 있어서 literally mean, and why is 시간 marked with -이/가?

Literally it’s because (I) have time.
시간이 uses -이/가 because 시간 is the subject of 있다 (to exist / to have). Korean often expresses to have time as 시간이 있다 (time exists for me).

How does the grammar -아서/어서 work in 있어서?

-아서/어서 connects clauses and commonly means because / so / and then, depending on context.
Here it’s the reason connector:

• 시간이 있어서 = because I have time
  So the sentence structure is: (reason) + (result).

Why is it 있어서 and not 있으니까?

Both can mean because, but they differ in nuance:

• -아서/어서: smoother, more matter-of-fact linking of reason → result (because I have time, I leave early).
• -(으)니까: can sound more explanatory, emphatic, or like giving justification (and is also common when the speaker is making a decision based on the reason).

So 시간이 있어서 일찍 퇴근해요 feels like a natural, casual explanation.

Does this sentence mean “I’m leaving early (now)” or “I leave early (in general)”?

Most naturally: I’m leaving work early today (a one-time situation).
That’s mainly because of 오늘은 (as for today) and the context implied by 퇴근해요 in conversation.
If you wanted a habitual meaning, you’d typically add something like 보통/자주 (usually/often) or a broader time frame.

What exactly does 퇴근해요 mean, and how is it formed?

퇴근하다 means to leave work / to get off work.

• Dictionary form: 퇴근하다
• Polite present (informal polite): 퇴근해요
  It’s a common, everyday verb for finishing work and going home.

Why is 일찍 placed before 퇴근해요?

일찍 is an adverb meaning early, and Korean usually places adverbs before the verb they modify:

• 일찍 퇴근해요 = leave work early
  You can also add emphasis with particles in some contexts (e.g., 일찍은 퇴근해요), but the neutral form is as in the sentence.

Is anything “missing” like 저는 (I) in this sentence?

Yes—Korean often omits the subject when it’s clear from context.
You could say:

• 저는 오늘은 시간이 있어서 일찍 퇴근해요.
  But it can sound slightly heavy/repetitive unless you need contrast (e.g., I’m leaving early, but someone else isn’t).

Can 오늘은 be moved elsewhere in the sentence?

It’s most natural at the beginning because it sets the frame for the whole statement: As for today…
You can move it for emphasis, but it often sounds less smooth:

• Less natural: 시간이 있어서 오늘은 일찍 퇴근해요.
  Usually keep 오늘은 up front unless you have a special reason.

What politeness level is -해요, and when would I use something else?

-해요 is the standard polite style used in everyday conversations (coworkers, acquaintances, service situations).
Other common options:

• More formal polite: 퇴근합니다 (announcements, formal workplace tone)
• Casual (to close friends): 퇴근해
  So you might hear: 오늘은 시간이 있어서 일찍 퇴근합니다 in a more formal office setting.

Can I say 오늘은 시간이 좀 있어서? What does 좀 add?

Yes, and it’s very common. 좀 softens the statement and can mean a bit / kind of, making it sound less blunt:

• 오늘은 시간이 좀 있어서 일찍 퇴근해요.
  ≈ I have a bit of time today, so I’m leaving early.
  It often feels more natural in conversation.

Does 시간이 있어서 imply “free time” specifically, or just “time available”?

It implies time available / time to spare in context. With work, it often means:

• workload is lighter, schedule allows it, nothing urgent is left
  If you want to explicitly say free time, you might use 여유가 있어서 (because I have leeway / spare capacity) or 시간이 남아서 (because I have time left), depending on nuance.