Switzerland: Sovereign Immunity – Switzerland

Enforcing a decision against a foreign state in Switzerland – no straight forward issue

As a rule, attachment proceedings initiated by a creditor in Switzerland based on a court or arbitral decision are quite straightforward. The applicable Debt Enforcement and Bankruptcy Act grants creditors who hold a judgment in hand an effective instrument to safeguard their claims in the form of a quick ex-parte blocking measure. This so-called Arrest may be granted by the single court judge in the district of the located debtor assets without any further requirements as to a connection to Switzerland, as long as the underlying claim is due and unsecured and assets have been plausibly identified in Switzerland. The attachment judge is even competent to issue attachment orders not only for assets located in his district but also for any other assets identified by the applicant throughout Switzerland, including real estate.

This efficient instrument becomes significantly more cumbersome when the counterparty of attachment proceedings is a sovereign state. In investor-state arbitrations, the issue of enforcing awards against sovereign states frequently rears its head. Switzerland, as a major global financial hub, thus often encounters situations where parties attempt to enforce judgements or awards against debtor states by pursuing assets deposited with Swiss banks, usually by first applying for attachment based on an award or a foreign court decision. The following article is intended to give creditors a short overview as to the statutory prerequisites and guiding jurisprudence under Swiss law that need to be borne in mind.

Suffice to say at the outset that in the land in which the League of Nations once had its seat, and which today still is host country to many UN agencies and other international organisations such as the Bank for International Settlements (BIS), with its registered office in Basel, attaching and enforcing claims against foreign states is not a straightforward matter.

Recognition and enforcement of a decision against a foreign state in Switzerland

Identification of state assets located in Switzerland

Before dealing with the legal complexities of enforcement in Switzerland, the primary question of locating assets must be addressed. At the beginning of any court proceedings against a state, the issue of subsequent enforcement in the event of a positive award should be analysed. Frequently, legal battles against states prove to be long, complicated and costly. Engaging in such proceedings without a clear strategy at the beginning as to how a successful award or decision could be enforced may prove detrimental, since the risks of states mobilising significant energies to avoid compliance with judgments against them should not be underestimated.

Identifying assets of a debtor, which are located in Switzerland, is not a simple matter. The creditor cannot simply address a request to the debt enforcement office and request seizure of debtor assets wherever they may be located. The law requires the applicant to identify with a high degree of precision the asset and its location. The applicant must credibly establish either a banking relationship, or a movable asset or real estate in Switzerland, which he or she wishes to attach.

This practical issue may pose a first significant challenge since the exact location of state funds may not be known. Real estate registers are not open to the public, unless a particular interest can be demonstrated and so far, there is no nationwide central real estate register. Even where an applicant can demonstrate that they have an interest (such as an open claim against a debtor), the creditor must still be able to identify the relevant plot of land.

Bank-client confidentiality further prohibits banks from reacting on mere fishing-expeditions. Thus, courts deny requests for seizure of funds in 'all Swiss bank accounts'. Securities are frequently held in corporations that do not reveal their shareholders to the public unless stock exchange regulations require disclosure. The forensic research into the debtor's assets, in particular where a state is concerned, should thus form part of the due diligence process preceding the court and enforcement exercise.

Therefore, the further explanations below assume that a creditor benefitting from a foreign (non-Swiss) decision has successfully identified assets in Switzerland.

Recognition of foreign decisions under Swiss law

The first procedural hurdle that a party applying for enforcement of a decision against a foreign state in Switzerland must pass is the recognition of the decision. In arbitration proceedings, the Swiss courts will review an international award from the limited perspective of the formal prerequisites under the New York Convention, to which Switzerland is a signatory.

Ordinary state decisions are in principle also recognised in Switzerland if the following prerequisites are satisfied.

First, the court rendering the judgement for which enforcement is sought (against the foreign state) must have been competent to issue such a judgment. This is the case if the court's jurisdiction is provided for by Swiss law (based on a provision on the conflict of laws), or if the defending party had its residence in the country of the issuing court. Further, such a decision shall be recognised when issued in a dispute over a monetary claim where the parties agreed to the competence of the court or where the defendant entered into the matter without reservations. In addition, the decision needs to be final; ie no ordinary appeal is possible (or has been rejected) against the decision. Lastly, no denial reasons pursuant to Swiss law may be at issue. Such reasons may be invoked in instances where recognising a decision would violate Swiss material public policy or where the underlying judgment rendered abroad was issued in violation of procedural guarantees considered to be fundamental in Switzerland (ie improper service, violation of the right to be heard, lis pendens in Switzerland).

If these criteria are satisfied, the decision is, in principle, recognised in Switzerland without any material review of its content. This having been said, the actual enforceability of such a decision if the defendant is a sovereign state, is further contingent on additional factors (discussed below).

Identification of and enforcement into state assets

The second hurdle entails convincing the court seized with the enforcement application that the assets identified by the applying creditor are eligible for seizure (and liquidation thereafter) under Swiss enforcement proceedings.

As in other states, Switzerland differentiates a state's (public) property according to the function it fulfils. It divides the assets belonging to a state into two distinct categories: assets that perform a public function and serve some public purpose (assets serving acta iure imperii); and assets that are held merely as financial assets by the state concerned, comparable to the way a private individual would hold his private funds (assets for acta iure gestionis). Commercially used assets are assets that are not managed based on sovereign power. With regards to this category of assets, Swiss courts (and most courts in the world) have developed rules that permit enforcement.

The outlined categorisation leads to the concept of 'limited state immunity', which has been developed over the years by the Swiss Federal Tribunal, the country's highest federal court. The concept is discussed in some more detail below.

In short, Swiss courts will deny any applications that aim at enforcing party claims against state assets that fall under the category of iure imperii, eg the embassy account, since Switzerland will not permit, in accordance with the public law concept, the interference by its courts into the sovereign management of a state's affairs. The sovereign purpose must be present and recognisable. Potential future sovereign usage is not taken into account. Where the enforcement of a decision, however, pertains to state assets that are held for non-public functions and are employed with commercial intent comparable to any private party, Swiss courts are in principle willing to entertain attachment proceedings, under the condition that the assets must reveal some sufficient link to Switzerland (more details below).

In Switzerland, when confronted with an application in this regard, the Swiss courts will apply their own Swiss law view (lex fori) of whether this criterion is met or not. The statutory provisions governing the limits on the seizure of debtor assets (so-called indispensable items) give some guidance in this regard. The statutory text provides that assets of a foreign state or a foreign central bank are excluded from such safeguarding measures. The same is expressly provided for in the treaty between Switzerland and BIS. Applications to the debt enforcement office in Basel requesting the sequestration of funds of a central bank will thus under normal circumstances not be successful.

Concept of limited state immunity under Swiss law

Pursuant to the longstanding jurisprudence of the Swiss Federal Tribunal, based on a decision going back nearly a century (Federal Tribunal Decision 44 I 53 of 1918), and in line with worldwide legal consensus in this matter of public law, Swiss courts have developed and refined their understanding of the concept of limited (or relative) state immunity. The concept is based on the universal understanding that no sovereign state can be subject to the state authority of another state. The principle is derived from the basic rule that in our world of states, each state is equal to the other and may not exercise court power over another (par in parem non habet iurisdictionem).

In its Swiss interpretation, this means that foreign states are, in principle, always immune from material court proceedings before Swiss courts, and therefore immune to subsequent enforcement proceedings (such as the attachment of assets).

Only in exceptional situations, as developed by the courts, may this general immunity be limited both with regards to court immunity and to any corresponding enforcement immunity. This latter extension to enforcement is a recent development dating back to approximately the mid-fifties of the previous century. This means that only where the state acts similarly to a natural person, its court immunity may be set aside and it may be treated like a normal party to civil court proceedings and, if found liable, be subject to enforcement proceedings.

Requirement of sufficient nexus to Switzerland

In addition to the hurdle of state immunity, Swiss jurisprudence has developed a further criterion that must be complied with when dealing with enforcement applications involving foreign states as debtors. Only where the legal relationship giving rise to the decision for which enforcement is sought has a sufficiently close nexus to Switzerland, such an application will be accepted by the Swiss courts. In other words, even where the foreign state has acted in a private capacity and assets that are in principle available for liquidation to the benefit of a creditor have been identified in Switzerland, Swiss courts will still only allow enforcement against such assets if the circumstances of the underlying case have such close links to Switzerland that applying the country's court system may be deemed reasonable to enforce the decision against the foreign state.

The underlying principle of this rule states that Switzerland will not entertain claims and not make available its court system for claims against other states and will not become unnecessarily embroiled in the legal wrangles of other states, where there is no evident connection to Switzerland other than the simple location of assets in Switzerland. The public interests of Switzerland do not demand such compliant behaviour, which may well lead to political repercussions and jeopardise the relations Switzerland entertains to other states. In contrast to the differentiation between public and private assets of states, which is a commonly accepted public law principle, the additional criteria of the sufficient connection to Switzerland is a distinctively Swiss feature of the courts' jurisprudence. It is a selfrestraint obligation that is applied in the interest of the country itself in a balancing act between due process and diplomatic deftness. As a self-standing principle, reviewing an application as to the existence of such a link must be performed even where a state has validly waived its right to court immunity. The courts have found that despite the existence of such a waiver, ie in the form of the conclusion of an arbitration agreement by the affected state or by the state partaking in court proceedings unreservedly, this does not oblige Swiss courts to make available the Swiss court structure for unrelated or only remotely linked disputes. The practice is to a degree a manifestation of Swiss procedural neutrality. " When does a sufficient link to Switzerland exist?

Following this prevailing jurisprudence by Swiss courts, a sufficient link to Switzerland may be assumed where the underlying contractual agreement giving rise to a claim, for which recognition and enforcement is sought, has its origin in Switzerland. Also, actions by the foreign state that would indicate a place of performance in Switzerland under the contract could constitute an adequate nexus to the country.

As noted earlier, the mere location of assets in Switzerland is deemed an insufficient link to Switzerland and will not permit execution of a decision. Additionally, the mere fact that the arbitration tribunal that rendered the decision in question had its seat in Switzerland is not enough to create the necessary link, if such decision on the seat was the result of a decision by the arbitral tribunal itself, an arbitral institution or another third party.

  • Scholarly criticism

The requirement of the Swiss link developed by the courts has not gone without scholarly criticism. The main objection to its application is that it lacks a basis in statutory law and therefore is unconstitutional, since the Federal Tribunal is not competent to enact statutory law in modo legislatoris. Legal scholars also rightly point out that the system leads to an unjustified disadvantage of Swiss communes, cantons and federal institutes compared to foreign states; since Swiss state entities are subject to debt enforcement into their non-public funds without reserve for actions performed in a commercial capacity.

Some scholars take the view that such practice, whereby assets of foreign states are welcome in Switzerland but cannot be subject to an attachment proceeding due to a lack of sufficient nexus, creates serious concerns and a logical discord. From this perspective, the mere fact that assets are located in Switzerland should suffice as a close link to Switzerland in the context of attachment proceedings. The reasoning is primarily that if a foreign state deposits assets abroad, that state also must anticipate the possibility that they could also be seized abroad, as long as they are not safeguarded by immunity under international law. Moreover, Switzerland equally had to reckon with legal disputes when accepting assets of foreign states. Accepting foreign assets, whilst at the same time prohibiting attachment proceedings in case of lacking sufficient nexus, is not justified.

  • Swiss nexus in practice – change in the offing?

Despite scholarly criticism, the Federal Tribunal – and major high courts such as the High Court of the Canton of Zurich – have upheld their jurisprudence regarding the requirement of the sufficient nexus when applying for enforcement. According to judgments by the Federal Tribunal, this jurisprudence has developed further from an initial practice by judges and has evolved into customary law and even into a form of law that is comparable with statutory law and thus sufficiently defined to build an additional enforcement requirement. In a more recent decision by the High Court of the Canton of Zurich, the court, though upholding the jurisprudence of the Federal Tribunal, stated that substantial reasons exist for the lawmaker to revisit this question and (possibly) re-cast the requirements in formal law. This suggestion has to date not developed any further.

A well thought out strategy is Key

In a nutshell, after the recognition of a decision in Switzerland, a party applying for enforcement of this decision against a foreign state must identify assets located in Switzerland. According to the concept of 'limited state immunity' that has been developed over the years by the Swiss Federal Tribunal, Switzerland distinguishes between acta iure imperii and acta iure gestionis and will only allow applications that aim at enforcing party claims against state assets that fall under the category of iure imperii, ie assets comparable to the manner in which a private individual holds his private funds. Moreover, an additional requirement is the sufficient link to Switzerland.

Notwithstanding the academic criticism, the Swiss courts still uphold their jurisprudence protecting sovereign states from suit and enforcement without such link. Enforcing awards or decisions against foreign states in Switzerland must not only deal with practical problems but also with several legal and procedural challenges. Setting up a well thought out strategy at the beginning of proceedings is thus highly advisable.

Previously published in IFLR – June 2017

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

To print this article, all you need is to be registered on Mondaq.com.

Click to Login as an existing user or Register so you can print this article.

Some comments from our readers…
“The articles are extremely timely and highly applicable”
“I often find critical information not available elsewhere”
“As in-house counsel, Mondaq’s service is of great value”

Related Topics
Related Articles
Up-coming Events Search
Font Size:
Mondaq on Twitter
Mondaq Free Registration
Gain access to Mondaq global archive of over 375,000 articles covering 200 countries with a personalised News Alert and automatic login on this device.
Mondaq News Alert (some suggested topics and region)
Select Topics
Registration (please scroll down to set your data preferences)

Mondaq Ltd requires you to register and provide information that personally identifies you, including your content preferences, for three primary purposes (full details of Mondaq’s use of your personal data can be found in our Privacy and Cookies Notice):

  • To allow you to personalize the Mondaq websites you are visiting to show content ("Content") relevant to your interests.
  • To enable features such as password reminder, news alerts, email a colleague, and linking from Mondaq (and its affiliate sites) to your website.
  • To produce demographic feedback for our content providers ("Contributors") who contribute Content for free for your use.

Mondaq hopes that our registered users will support us in maintaining our free to view business model by consenting to our use of your personal data as described below.

Mondaq has a "free to view" business model. Our services are paid for by Contributors in exchange for Mondaq providing them with access to information about who accesses their content. Once personal data is transferred to our Contributors they become a data controller of this personal data. They use it to measure the response that their articles are receiving, as a form of market research. They may also use it to provide Mondaq users with information about their products and services.

Details of each Contributor to which your personal data will be transferred is clearly stated within the Content that you access. For full details of how this Contributor will use your personal data, you should review the Contributor’s own Privacy Notice.

Please indicate your preference below:

Yes, I am happy to support Mondaq in maintaining its free to view business model by agreeing to allow Mondaq to share my personal data with Contributors whose Content I access
No, I do not want Mondaq to share my personal data with Contributors

Also please let us know whether you are happy to receive communications promoting products and services offered by Mondaq:

Yes, I am happy to received promotional communications from Mondaq
No, please do not send me promotional communications from Mondaq
Terms & Conditions

Mondaq.com (the Website) is owned and managed by Mondaq Ltd (Mondaq). Mondaq grants you a non-exclusive, revocable licence to access the Website and associated services, such as the Mondaq News Alerts (Services), subject to and in consideration of your compliance with the following terms and conditions of use (Terms). Your use of the Website and/or Services constitutes your agreement to the Terms. Mondaq may terminate your use of the Website and Services if you are in breach of these Terms or if Mondaq decides to terminate the licence granted hereunder for any reason whatsoever.

Use of www.mondaq.com

To Use Mondaq.com you must be: eighteen (18) years old or over; legally capable of entering into binding contracts; and not in any way prohibited by the applicable law to enter into these Terms in the jurisdiction which you are currently located.

You may use the Website as an unregistered user, however, you are required to register as a user if you wish to read the full text of the Content or to receive the Services.

You may not modify, publish, transmit, transfer or sell, reproduce, create derivative works from, distribute, perform, link, display, or in any way exploit any of the Content, in whole or in part, except as expressly permitted in these Terms or with the prior written consent of Mondaq. You may not use electronic or other means to extract details or information from the Content. Nor shall you extract information about users or Contributors in order to offer them any services or products.

In your use of the Website and/or Services you shall: comply with all applicable laws, regulations, directives and legislations which apply to your Use of the Website and/or Services in whatever country you are physically located including without limitation any and all consumer law, export control laws and regulations; provide to us true, correct and accurate information and promptly inform us in the event that any information that you have provided to us changes or becomes inaccurate; notify Mondaq immediately of any circumstances where you have reason to believe that any Intellectual Property Rights or any other rights of any third party may have been infringed; co-operate with reasonable security or other checks or requests for information made by Mondaq from time to time; and at all times be fully liable for the breach of any of these Terms by a third party using your login details to access the Website and/or Services

however, you shall not: do anything likely to impair, interfere with or damage or cause harm or distress to any persons, or the network; do anything that will infringe any Intellectual Property Rights or other rights of Mondaq or any third party; or use the Website, Services and/or Content otherwise than in accordance with these Terms; use any trade marks or service marks of Mondaq or the Contributors, or do anything which may be seen to take unfair advantage of the reputation and goodwill of Mondaq or the Contributors, or the Website, Services and/or Content.

Mondaq reserves the right, in its sole discretion, to take any action that it deems necessary and appropriate in the event it considers that there is a breach or threatened breach of the Terms.

Mondaq’s Rights and Obligations

Unless otherwise expressly set out to the contrary, nothing in these Terms shall serve to transfer from Mondaq to you, any Intellectual Property Rights owned by and/or licensed to Mondaq and all rights, title and interest in and to such Intellectual Property Rights will remain exclusively with Mondaq and/or its licensors.

Mondaq shall use its reasonable endeavours to make the Website and Services available to you at all times, but we cannot guarantee an uninterrupted and fault free service.

Mondaq reserves the right to make changes to the services and/or the Website or part thereof, from time to time, and we may add, remove, modify and/or vary any elements of features and functionalities of the Website or the services.

Mondaq also reserves the right from time to time to monitor your Use of the Website and/or services.


The Content is general information only. It is not intended to constitute legal advice or seek to be the complete and comprehensive statement of the law, nor is it intended to address your specific requirements or provide advice on which reliance should be placed. Mondaq and/or its Contributors and other suppliers make no representations about the suitability of the information contained in the Content for any purpose. All Content provided "as is" without warranty of any kind. Mondaq and/or its Contributors and other suppliers hereby exclude and disclaim all representations, warranties or guarantees with regard to the Content, including all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement. To the maximum extent permitted by law, Mondaq expressly excludes all representations, warranties, obligations, and liabilities arising out of or in connection with all Content. In no event shall Mondaq and/or its respective suppliers be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use of the Content or performance of Mondaq’s Services.


Mondaq may alter or amend these Terms by amending them on the Website. By continuing to Use the Services and/or the Website after such amendment, you will be deemed to have accepted any amendment to these Terms.

These Terms shall be governed by and construed in accordance with the laws of England and Wales and you irrevocably submit to the exclusive jurisdiction of the courts of England and Wales to settle any dispute which may arise out of or in connection with these Terms. If you live outside the United Kingdom, English law shall apply only to the extent that English law shall not deprive you of any legal protection accorded in accordance with the law of the place where you are habitually resident ("Local Law"). In the event English law deprives you of any legal protection which is accorded to you under Local Law, then these terms shall be governed by Local Law and any dispute or claim arising out of or in connection with these Terms shall be subject to the non-exclusive jurisdiction of the courts where you are habitually resident.

You may print and keep a copy of these Terms, which form the entire agreement between you and Mondaq and supersede any other communications or advertising in respect of the Service and/or the Website.

No delay in exercising or non-exercise by you and/or Mondaq of any of its rights under or in connection with these Terms shall operate as a waiver or release of each of your or Mondaq’s right. Rather, any such waiver or release must be specifically granted in writing signed by the party granting it.

If any part of these Terms is held unenforceable, that part shall be enforced to the maximum extent permissible so as to give effect to the intent of the parties, and the Terms shall continue in full force and effect.

Mondaq shall not incur any liability to you on account of any loss or damage resulting from any delay or failure to perform all or any part of these Terms if such delay or failure is caused, in whole or in part, by events, occurrences, or causes beyond the control of Mondaq. Such events, occurrences or causes will include, without limitation, acts of God, strikes, lockouts, server and network failure, riots, acts of war, earthquakes, fire and explosions.

By clicking Register you state you have read and agree to our Terms and Conditions