Time is often one of the most valuable elements of a construction project.

A shopping centre that opens six months late may lose an entire commercial season. A hotel delivered after the beginning of the tourism period may suffer substantial revenue losses. An industrial facility that cannot commence production on schedule may expose the employer to financing costs, lost contracts and operational losses. A residential project that remains unfinished may prevent purchasers or investors from using or renting their properties.

For this reason, Turkish construction contracts commonly contain provisions requiring the contractor to pay a predetermined amount for each day, week or month of delay.

These provisions are frequently described as delay penalties, contractual penalties, liquidated damages or “gecikme cezası / cezai şart.”

Under Turkish law, such clauses are generally permissible. However, whether a delay penalty can actually be enforced depends on considerably more than the existence of a sentence in the contract.

The legal analysis normally requires answers to several questions:

Was there a binding completion date?

Did the contractor actually fall into delay?

Was the delay attributable to the contractor or to the employer?

Was an extension of time granted?

Does the contractual provision constitute a penalty payable in addition to performance?

Did the employer accept late performance without reserving its penalty rights?

Is the amount excessive?

Is the contractor a merchant?

Does the contract contain a contractual cap?

And has the claim been brought within the applicable limitation period?

These issues make delay penalties one of the most technically important subjects in Turkish construction disputes.

1. Construction Contracts Under Turkish Law

A conventional construction contract will generally fall within the framework of the contract for work (eser sözleşmesi) regulated by Articles 470 and following of the Turkish Code of Obligations No. 6098.

Article 470 defines this contractual relationship as one in which the contractor undertakes to create a work and the employer undertakes to pay a price in return.

Article 471 further requires the contractor to perform its obligations with loyalty and due care, taking into account the employer’s legitimate interests and the professional and technical standards expected from a prudent contractor operating in the relevant field.

Construction contracts can range from relatively simple agreements for the construction of a house to highly sophisticated EPC, turnkey, infrastructure, industrial and real estate development contracts.

Regardless of their commercial complexity, where Turkish law governs the agreement, the general contractual rules of the Turkish Code of Obligations and the specific rules applicable to contracts for work become highly relevant.

2. What Is a Delay Penalty?

A delay penalty is normally a predetermined contractual consequence triggered when the contractor fails to complete the agreed work within the contractual period.

A clause may, for example, state:

“The contractor shall pay TRY 100,000 for each calendar day of delay after the contractual completion date.”

Another clause may provide:

“For each week of delay, the contractor shall pay 0.2% of the contract price, provided that the total delay penalty shall not exceed 10% of the contract price.”

The legal effect of the clause depends on its wording and function rather than merely the terminology chosen by the parties.

Under Article 179 of the Turkish Code of Obligations, where a contractual penalty is specifically agreed for failure to perform an obligation at the agreed time or place, the creditor may generally demand both the principal performance and the contractual penalty, unless the creditor has expressly waived the penalty or accepted performance without reservation.

This type of penalty is particularly important in construction contracts because the employer will usually still want the completed building.

In other words, the employer may potentially say:

“Complete the building and also pay the contractual penalty for the 120-day delay.”

The employer does not necessarily have to choose between receiving the completed project and claiming the delay penalty.

3. Delay Penalties Are Different From Penalties for Complete Non-Performance

Article 179 makes an important distinction.

If the penalty is agreed simply for failure to perform or improper performance, the general rule is that the creditor may demand either performance or the contractual penalty unless otherwise agreed.

But where the penalty is specifically attached to failure to perform at the agreed time or place, the creditor may generally claim the penalty in addition to the principal obligation.

This is why drafting matters.

A clause stating:

“If the contractor breaches the contract, it shall pay EUR 1 million”

may have different legal consequences from:

“If the contractor fails to achieve completion by 30 June 2027, it shall pay EUR 20,000 for every calendar day of delay until completion.”

In major construction contracts, the clause should therefore identify clearly:

the obligation protected by the penalty, the completion date, the daily or weekly rate, the starting point of accrual, the endpoint of accrual and any maximum cap.

Ambiguous drafting can transform what appears to be a simple mathematical calculation into a major contractual dispute.

4. A Fixed Completion Date Can Put the Contractor in Default Automatically

The general rule under Article 117 of the Turkish Code of Obligations is that a debtor falls into default after receiving a notice from the creditor.

However, where the exact date of performance has been agreed in advance, the debtor may fall into default when that date expires without performance.

This is particularly significant in construction contracts containing a fixed date such as:

“Contractual completion date: 31 December 2027.”

If the contractor fails to achieve the contractually defined completion by that date, a separate notice may not necessarily be required merely to establish default under Article 117.

Nevertheless, formal notification remains commercially and evidentially important.

In sophisticated construction disputes, the employer should generally document that the completion date has expired, identify the continuing delay and expressly reserve rights relating to delay penalties and damages.

This becomes even more important where both parties are merchants. Article 18 of the Turkish Commercial Code prescribes specific methods for notices between merchants concerning default, termination and withdrawal, including notarised notices, registered letters, telegrams and registered electronic mail using a secure electronic signature.

5. The Most Dangerous Mistake: Accepting Late Delivery Without Reservation

One of the most important rules in delay-penalty litigation is contained directly in Article 179 of the Turkish Code of Obligations.

Where a penalty has been agreed for failure to perform at the agreed time or place, the creditor may claim both performance and the penalty unless the creditor accepts performance without reservation or expressly waives the penalty.

This can become decisive at the final delivery stage.

Assume that the contractual completion date was 1 January.

The building is ultimately delivered on 1 July.

The employer signs a final acceptance document stating simply:

“The works have been received and accepted.”

If the employer does not reserve the accumulated delay-penalty claim, the contractor may argue that the employer accepted the late performance without reservation and thereby lost the right to claim the penalty.

Article 131 of the Turkish Code of Obligations reinforces the importance of reservation by providing that accrued contractual penalties may continue to be claimed where that right has been reserved by contract, by a statement made no later than performance, or where the circumstances show that it was preserved.

Accordingly, the employer should be extremely careful when signing:

temporary acceptance records,

final acceptance records,

completion certificates,

handover protocols,

settlement documents,

final accounts,

or release agreements.

A reservation might state, in substance, that acceptance of the project does not constitute a waiver of accrued delay penalties, damages or other contractual claims.

In major construction disputes, one sentence in the acceptance protocol can affect claims worth millions.

6. Does the Employer Have to Prove Actual Loss?

One of the principal commercial advantages of a contractual penalty is that the employer generally does not have to prove actual damage in order to claim the agreed penalty.

Article 180 of the Turkish Code of Obligations expressly provides that the agreed penalty may be demanded even where the creditor has suffered no loss.

This is a major distinction between a contractual penalty and an ordinary damages claim.

Assume a construction contract states that the contractor must pay EUR 5,000 per day for late completion.

The project is delivered 30 days late.

The contractual calculation would produce a penalty of EUR 150,000.

For the contractual penalty itself, the employer does not normally have to reconstruct every euro of actual loss suffered during those 30 days.

This makes penalty clauses particularly valuable where the economic consequences of delay are difficult to quantify in advance.

7. What If the Employer’s Actual Loss Is Higher Than the Penalty?

A contractual penalty does not necessarily mean that the employer’s recovery is always limited to that amount.

Article 180 also regulates situations where the actual loss exceeds the agreed penalty.

Where the creditor’s loss exceeds the contractual penalty, recovery of the amount exceeding the penalty is possible under the statutory conditions; for that excess amount, the creditor must establish the debtor’s fault.

Consider the following example.

The construction contract imposes a maximum delay penalty of EUR 500,000.

However, because the industrial facility was delivered six months late, the employer proves EUR 1.2 million in legally recoverable delay-related losses.

The contractual penalty and the additional damages claim must then be analysed separately.

The contract itself must also be reviewed carefully because sophisticated construction agreements frequently contain limitation-of-liability clauses, exclusive-remedy provisions or wording stating that delay penalties constitute the employer’s sole remedy for delay.

The legal effect of those clauses must be determined independently.

8. Can the Court Reduce an Excessive Delay Penalty?

Yes—subject to one extremely important commercial-law exception.

Article 182 of the Turkish Code of Obligations provides that parties are free to determine the amount of a contractual penalty. However, the same article requires the court to reduce a penalty that it considers excessive.

Therefore, in an ordinary contractual relationship, a court may conclude that a penalty has become disproportionately high considering matters such as the underlying obligation, contractual value, duration of the delay, economic significance of timely performance and circumstances of the breach.

For example, a contract worth TRY 5 million that generates a TRY 30 million penalty for a relatively limited delay will inevitably raise serious proportionality questions.

But construction contracts between commercial enterprises require a different analysis.

9. The Merchant Exception: TTK Article 22

Article 22 of the Turkish Commercial Code contains one of the most important rules for commercial construction contracts.

It provides that a debtor having merchant status cannot request reduction of the contractual penalty on the ground that the agreed penalty is excessive in the situations covered by Article 182/3 of the Turkish Code of Obligations.

This is highly significant because many major construction disputes arise between:

a real estate development company and a construction company,

a hotel company and a contractor,

an industrial company and an EPC contractor,

or two other commercial enterprises.

Where the contractor is acting as a merchant in relation to its commercial business, the protection normally associated with judicial reduction of an excessive penalty is substantially restricted by TTK Article 22.

This makes negotiation of the penalty clause particularly important for contractors.

A contractor should not assume:

“If the penalty becomes too large, the court will simply reduce it later.”

For a merchant debtor, that assumption can be extremely dangerous.

At the same time, TTK Article 22 should not be interpreted as making every imaginable contractual clause legally untouchable. General validity restrictions continue to exist. Article 27 of the Turkish Code of Obligations renders contractual provisions invalid where they conflict with mandatory law, morality, public order or personal rights, or concern an impossible subject.

The questions of excessiveness and fundamental validity should therefore not be confused.

10. Delay Must Be Calculated Correctly

A delay penalty can only be calculated reliably if the contractual completion date is legally established.

This sounds straightforward but is frequently one of the most disputed issues in construction litigation.

The original completion date may have been changed by:

variation orders,

additional works,

employer instructions,

site-access delays,

late design approvals,

permit problems,

suspension orders,

extensions of time,

force majeure,

or amendments to the construction programme.

Therefore, the correct calculation is rarely:

Original completion date + actual delivery date = contractor delay.

The first question is usually whether the contractor was legally entitled to an extension of the contractual completion date.

If an extension should have been granted, the delay penalty should normally be assessed against the adjusted completion date rather than automatically against the date originally written in the contract.

This makes contemporaneous project documentation essential.

11. Employer-Caused Delay Can Defeat a Penalty Claim

The employer cannot ordinarily create the delay itself and then simply charge the contractor for that same period.

For example, the employer may:

fail to hand over the site on time,

issue drawings late,

delay approvals,

continually change the design,

fail to make required advance payments,

prevent access to part of the site,

or suspend the project.

General Turkish contractual liability under Article 112 is based on non-performance or improper performance, subject to the debtor’s ability to establish that no fault can be attributed to it. Article 118 similarly provides that a debtor in default is liable for delay losses unless it proves that it was not at fault in falling into default.

In addition, Article 473 expressly distinguishes delays that cannot be attributed to the employer when regulating the employer’s right to withdraw before the scheduled delivery date.

Accordingly, responsibility for each period of delay should be analysed rather than assumed.

Large construction cases often require a detailed chronology allocating delay periods between contractor-risk events, employer-risk events and legally excusable events.

12. Force Majeure Does Not Automatically Cancel Every Delay Penalty

Construction contracts frequently contain detailed force-majeure clauses.

Events may include earthquakes, war, extraordinary governmental restrictions, certain natural disasters or other circumstances defined by the agreement.

However, the mere existence of a difficult event does not automatically eliminate the contractor’s liability for every subsequent delay.

The analysis should determine whether:

the event actually prevented or delayed the relevant work;

the event falls within the contractual definition;

proper notice was given;

reasonable mitigation measures were taken;

an extension of time was requested;

and the claimed delay period was actually caused by the event.

Article 136 of the Turkish Code of Obligations provides that an obligation ends where performance becomes impossible for a reason for which the debtor cannot be held responsible. Article 182 further provides that, unless otherwise agreed, a contractual penalty cannot be demanded where the principal obligation becomes impossible for a reason for which the debtor is not responsible.

Construction delay, however, frequently involves temporary difficulty rather than complete legal impossibility.

The precise contractual force-majeure and extension-of-time mechanism therefore remains critical.

13. Economic Difficulty Is Not Automatically Force Majeure

A contractor may encounter substantial increases in labour, material, energy or financing costs during a long construction project.

That does not automatically mean the contractor can ignore the contractual completion date.

Turkish law separately regulates hardship (aşırı ifa güçlüğü) under Article 138.

Where an extraordinary and unforeseeable event not attributable to the debtor fundamentally changes the contractual balance to such an extent that demanding performance would violate good-faith principles, the debtor may, subject to the statutory conditions, seek adaptation of the contract and potentially withdrawal if adaptation is impossible.

Hardship, force majeure, impossibility and ordinary commercial difficulty are legally different concepts.

Contractors should therefore be cautious about treating increases in construction costs as an automatic legal justification for late completion.

14. The Employer May Have Rights Even Before the Completion Date

Turkish law provides an important remedy where it becomes obvious during construction that the contractor will not be able to finish on time.

Article 473 of the Turkish Code of Obligations provides that where the contractor fails to commence work on time, delays the work contrary to the contract, or where a delay not attributable to the employer makes it clear that the work cannot be completed within the agreed time, the employer may withdraw from the agreement without waiting for the scheduled delivery date.

This is commercially significant.

An employer does not necessarily have to watch an obviously failing construction project for another twelve months merely because the formal completion date has not yet arrived.

Where the statutory conditions are satisfied, early contractual remedies may be available.

Whether exercising that right is commercially sensible is a separate question, particularly where another contractor would need to complete the project.

15. Delay Penalty and Termination Are Different Remedies

A contract should explain what happens to accumulated delay penalties if the employer eventually terminates the contract.

Possible contractual structures include:

penalties accruing until actual completion;

penalties accruing until termination;

penalties converting into general damages after termination;

or a maximum penalty threshold triggering a termination right.

Without careful drafting, disputes may arise over whether penalties continue after the principal performance obligation has ended.

Articles 123–125 of the Turkish Code of Obligations separately regulate remedies for default in reciprocal contracts, including additional time for performance, continued performance with delay damages, damages for non-performance and withdrawal from the contract under the statutory conditions.

Therefore, the delay-penalty clause must be read together with the termination and default provisions.

16. Contractual Caps Can Be Just as Important as the Daily Rate

Sophisticated construction contracts rarely negotiate only the amount payable per day.

They also negotiate the maximum aggregate liability.

For example:

0.1% of the contract price per day, capped at 10% of the total contract price.

Once the contractual cap has been reached, the employer’s further rights depend on the remaining provisions of the contract and the applicable law.

The employer may potentially have termination or damages remedies, but it should not automatically assume that a contractual cap can simply be ignored.

Likewise, contractors should determine whether the cap applies only to delay penalties or to all forms of contractual liability.

Expressions such as:

“aggregate liability,”

“delay damages cap,”

“overall liability cap,”

and

“exclusive remedy”

can have very different legal consequences.

17. Partial Completion and Milestone Penalties

Major construction contracts frequently contain several deadlines rather than one final completion date.

For example, the contract may impose separate dates for:

foundation completion,

structural completion,

mechanical completion,

testing,

provisional acceptance,

commercial operation,

and final acceptance.

Separate penalties may be attached to individual milestones.

Where this structure is used, the contract should explain whether penalties are cumulative.

Otherwise, a contractor could potentially face one penalty for missing an intermediate milestone and another penalty for missing final completion, even though both penalties arise from substantially the same period of delay.

Precise drafting is therefore essential to prevent unintended double recovery disputes.

18. Evidence Is Critical in Delay-Penalty Litigation

Although proving actual financial loss is generally unnecessary for the contractual penalty itself under Article 180, the employer must still prove that the contractual conditions triggering the penalty were satisfied.

In practice, the decisive evidence will often include the executed construction contract, amendments, work programme, site-delivery records, progress reports, correspondence, variation orders, extension-of-time requests, employer instructions, meeting minutes, temporary and final acceptance records, notices, expert reports and project schedules.

In complex disputes, a construction-planning expert may be required to determine the critical path and establish which event actually caused the completion date to move.

A delay is legally relevant only if it actually affects the contractual completion obligation in the manner required by the agreement.

19. Contractors Must Follow Extension-of-Time Notice Procedures

Many construction contracts require a contractor seeking an extension of time to provide notice within a specified number of days after becoming aware of the delaying event.

For example:

“The contractor shall notify the employer within seven days of any event likely to delay completion.”

Whether failure to comply with such a clause completely eliminates the extension claim depends on the exact wording, applicable mandatory rules and circumstances.

Nevertheless, contractors should never ignore contractual notice procedures.

A contractor that waits until the end of the project and then claims:

“We were delayed for 200 days by the employer”

may face a much more difficult evidentiary and contractual position than a contractor that documented every delaying event contemporaneously.

The same principle applies to the employer.

Delay claims should be managed while the project is continuing rather than reconstructed only after litigation begins.

20. Standard Contract Terms May Also Be Reviewed Under General Terms Rules

Not every construction contract is genuinely negotiated clause by clause.

Some developers, employers and contractors repeatedly use standard form agreements.

The Turkish Code of Obligations regulates general terms and conditions in Articles 20–25. It provides rules governing incorporation, interpretation, unilateral amendment and terms that unfairly aggravate the other party’s position contrary to good faith.

Accordingly, the fact that a delay-penalty clause appears in a signed standard contract does not necessarily end every validity or interpretation question.

The circumstances in which the clause was incorporated and the nature of the contractual relationship may also require examination.

21. Limitation Periods Should Not Be Ignored

Delay penalties should also be pursued within the applicable limitation period.

Article 147 of the Turkish Code of Obligations generally subjects claims arising from contracts for work to a five-year limitation period, except for the statutory exception concerning the contractor’s grossly faulty failure to perform or proper performance. Article 149 provides that limitation generally begins when the claim becomes due.

The exact starting date of a delay-penalty claim can require contractual analysis, particularly where penalties accrue daily or monthly or become payable only after certification or final account procedures.

The safest approach is therefore not to postpone enforcement merely because construction litigation often continues for years.

22. How Should a Strong Delay-Penalty Clause Be Drafted?

A commercially effective clause should make the consequences of delay mathematically and legally predictable.

At minimum, the contract should clearly identify the contractual completion date, the meaning of completion, the penalty rate, whether calendar days or working days are used, any grace period, the maximum penalty cap, the extension-of-time procedure, excusable-delay events, force-majeure rules, employer-caused delay, milestone penalties, the relationship between penalties and additional damages, the relationship between penalties and termination, and whether the penalty constitutes an exclusive remedy.

Most importantly, the employer should ensure that the contract expressly preserves the right to claim accumulated penalties even if late performance is ultimately accepted.

For contractors, the opposite concern applies: the clause should contain a clear cap, a workable extension-of-time mechanism and fair rules for employer-caused or concurrent delay.

23. A Practical Example

Assume that a Turkish construction company agrees to construct a hotel for EUR 20 million.

The contract requires completion by 1 April 2027.

The delay penalty is:

EUR 20,000 per calendar day, capped at 10% of the contract value.

Completion occurs on 30 June 2027, approximately 90 days late.

At first sight, the calculation appears simple:

90 × EUR 20,000 = EUR 1.8 million.

But before EUR 1.8 million can confidently be claimed, the legal team should examine the entire delay history.

Suppose the employer delivered critical architectural drawings 20 days late.

Suppose another 15 days resulted from additional work ordered by the employer.

Suppose the contractor properly requested extensions for both events.

The legally relevant contractor delay may be considerably less than 90 days.

Assume, however, that no valid extension applies and the contractor is responsible for the entire delay.

The EUR 1.8 million penalty remains below the 10% contractual cap of EUR 2 million.

If the employer accepts the completed hotel but clearly records in the acceptance protocol that all accrued delay-penalty rights are reserved, Article 179 allows the employer, in principle, to maintain the penalty claim together with acceptance of performance.

If the contractor is a merchant, it also cannot simply rely on TBK Article 182/3 and demand judicial reduction merely because the amount is commercially painful; TTK Article 22 imposes an important restriction on that defence.

That example demonstrates why delay-penalty disputes cannot be resolved by counting days alone.

Conclusion: A Delay Penalty Is Only as Strong as the Contract and the Project Records Behind It

Delay penalties are legally recognised and commercially powerful tools in Turkish construction contracts.

Articles 179–182 of the Turkish Code of Obligations provide the principal statutory framework.

Where a contractual penalty is specifically attached to failure to perform at the agreed time, the employer may generally demand both completion of the works and the penalty, provided that the penalty right has not been waived and late performance has not been accepted without reservation.

The employer does not ordinarily have to prove actual loss merely to recover the agreed contractual penalty. If actual recoverable loss exceeds the penalty, an additional claim may be available subject to the requirements of Article 180.

Article 182 permits judicial reduction of excessive penalties as a general rule, but commercial construction contracts involve a crucial qualification: TTK Article 22 prevents a merchant debtor from requesting reduction merely on the basis that the contractual penalty is excessive.

For employers, the greatest practical danger is often not the amount of the penalty but losing it by accepting delayed performance without an appropriate reservation.

For contractors, the greatest danger is signing a commercially aggressive daily penalty clause without a clear cap and without a workable extension-of-time system.

Accordingly, every serious Turkish construction contract should answer four questions before construction begins:

When exactly is completion due?

Which delays extend that deadline?

How much is payable for contractor-responsible delay?

What happens when the employer ultimately accepts the late project?

If those questions are answered precisely in the contract—and documented properly throughout construction—the delay-penalty mechanism can provide substantial predictability.

If they are not, a clause intended to simplify damages can become one of the largest disputes in the entire project.