İhbar süresi dört hafta.

In Turkish, the verb to be is often omitted in the present tense.

So:

• İhbar süresi dört hafta. = The notice period is four weeks.

This is completely normal Turkish.
If you want to make it explicit in a different tense, Turkish does use forms of to be, for example:

• İhbar süresi dört haftaydı. = The notice period was four weeks.

But in the simple present, leaving it out is standard.

Literally, it means something like notice period or notification period.

Breakdown:

• ihbar = notice, notification, reporting
• süre = period, duration, time span
• süresi = its period / the period of

So ihbar süresi is a noun phrase meaning the notice period.

In employment/legal contexts, it usually refers to the amount of notice that must be given before leaving a job or ending a contract.

This is a very common learner question.
Süresi contains a suffix that helps form a possessive-style noun phrase.

• süre = period, duration
• süresi = its period / the period of

In Turkish, phrases like notice period, school bus, car door, summer holiday are often built using a structure where the second noun gets a possessive ending.

So:

• ihbar süresi = notice period
• literally: the period of notice

This is a standard Turkish noun compound pattern.

After numbers, Turkish normally uses the singular noun, not the plural.

So:

• dört hafta = four weeks
• not dört haftalar

This is one of the most important differences from English.

Examples:

• iki gün = two days
• üç ay = three months
• beş yıl = five years

So dört hafta is exactly what you should expect.

The sentence is:

• İhbar süresi = subject/topic
• dört hafta = predicate/complement

So the structure is basically:

• [Notice period] [four weeks].

This is a very natural Turkish sentence pattern. Turkish often puts the key information at the end, so dört hafta comes last.

No.

You would not say:

• İhbar süresi bir dört hafta. ❌

And Turkish often does not use a word corresponding to a/the the way English does.

So:

• İhbar süresi dört hafta. = The notice period is four weeks.

There is no article system like English a / an / the, so the sentence works fine without anything extra.

A rough guide:

• İhbar ≈ eeh-BAR
• süresi ≈ syoo-reh-SEE
• dört ≈ something like durt with rounded lips
• hafta ≈ HAF-ta

A few important sounds:

• İ is like the i in machine
• ı (not in this sentence, but often confused with i) is a different vowel, more like a dull uh sound
• ö in dört is like German ö or French eu; English doesn’t have an exact equivalent
• ü in süresi is like German ü or French u

It is common, but it sounds a bit formal or official depending on context.

You often see ihbar in:

• legal language
• workplace/contract language
• official documents
• police/reporting contexts

In this sentence, ihbar süresi is a standard expression, especially in HR or employment contexts.

So yes, it is common, but not as casual as basic everyday vocabulary like iş, ev, or zaman.

Yes. That is also correct.

• İhbar süresi dört hafta.
• İhbar süresi dört haftadır.

The version with -dır/-dir/-dur/-dür can sound a bit more formal, definite, or explanatory.

So:

• İhbar süresi dört hafta. = neutral, natural
• İhbar süresi dört haftadır. = a bit more formal or emphatic

Both are good, but the shorter version is very common in everyday Turkish.

In isolation, Turkish often leaves this kind of definiteness to context.

So İhbar süresi dört hafta can be understood as:

• The notice period is four weeks
• or, in some contexts, Notice period: four weeks

But in real use, it will usually be understood from the situation. If you are talking about a specific job or contract, English naturally translates it as the notice period is four weeks.

Good question, because Turkish handles these in a specific way.

Negative:

• İhbar süresi dört hafta değil. = The notice period is not four weeks.

Question:

• İhbar süresi dört hafta mı? = Is the notice period four weeks?

Past:

• İhbar süresi dört haftaydı. = The notice period was four weeks.

So even though the present tense sentence has no visible is, Turkish still has clear ways to make it negative or turn it into a question.