To comply with the Work in Fishing Convention (ILO C188), a fishing vessel must meet standards covering crew agreements, rest hours, safe accommodation, adequate food and water, medical care, and social security protection. The convention sets a comprehensive floor of labor rights specifically designed for the realities of commercial fishing, where workers often spend weeks or months at sea far from any port. The sections below break down each requirement in plain terms, from documentation to flag state responsibilities to what non-compliance could mean for your brand.
Which specific labor standards does ILO C188 set for fishing vessels?
ILO C188 sets minimum labor standards for fishers working on commercial fishing vessels of 24 meters or more in length operating at sea, though many ratifying countries apply it more broadly. The convention covers crew agreements, minimum age requirements, medical fitness, rest periods, accommodation, food, medical care onboard, repatriation rights, and social security. Together, these provisions aim to bring fishing vessel conditions in line with those required in other maritime industries.
The minimum age for work on a fishing vessel under C188 is 16 years, with restrictions on night work and hazardous duties for those under 18. All crew members must hold a valid medical fitness certificate confirming they are physically capable of performing their duties at sea. The vessel owner and skipper share responsibility for ensuring these standards are met throughout a voyage, not just at the point of departure.
C188 also requires that vessels maintain a safe working environment. This includes proper safety equipment, training, and procedures to minimize the risk of accidents, injury, and occupational illness. Flag states are expected to inspect vessels and enforce these requirements, though the level of enforcement varies considerably between jurisdictions.
What crew documentation and agreements must a vessel carry under C188?
Under ILO C188, every fisher on a covered vessel must have a written fishing vessel work agreement (FVWA) before departure. This agreement must specify the fisher’s name and date of birth, the vessel’s name and registration, the skipper’s name, the nature and duration of the engagement, the work to be performed, remuneration, and conditions for termination. A copy must be held by the fisher and another kept onboard.
The vessel itself must carry a crew list, valid medical fitness certificates for all crew members, and documentation confirming compliance with any applicable collective bargaining agreements. Where flag state law requires it, vessels may also need to carry evidence of social security coverage for each crew member.
Inspectors at port can request these documents, and absent or incomplete paperwork is often treated as a red flag triggering deeper inspection. For supply chain buyers, the absence of proper crew agreements onboard a vessel supplying their product is a material compliance gap, not just an administrative oversight.
Book a demoHow are rest hours and watch-keeping schedules regulated under the convention?
ILO C188 sets minimum rest requirements for fishers to protect against fatigue-related accidents and health risks. Fishers must receive a minimum of 10 hours of rest in any 24-hour period and at least 77 hours of rest in any seven-day period. These limits may be adjusted under certain conditions, such as emergencies or specific operational needs, but only within defined boundaries and with proper documentation.
Watch-keeping schedules must be organized so that no individual bears an excessive burden. Vessels are expected to maintain records of rest hours for each crew member, and these records must be available for inspection. In practice, enforcing rest-hour requirements on smaller vessels or during active fishing operations can be difficult, which is one reason auditors and port state inspectors pay close attention to logbook records when assessing compliance.
Fatigue is widely recognized as one of the leading contributors to accidents at sea. The rest-hour provisions in C188 reflect that reality and give port state authorities a concrete, measurable standard to check when a vessel calls at port.
What accommodation and food standards apply to fishing vessel crews?
ILO C188 requires that fishing vessels provide crew members with safe, decent accommodation and sufficient food and drinking water for the duration of the voyage. Accommodation must meet minimum space requirements per person, provide adequate ventilation, lighting, and heating or cooling as appropriate to the operating region, and include sanitary facilities. The specific dimensions and specifications depend on vessel size and the date of construction.
Accommodation requirements
Sleeping quarters must provide each fisher with a separate berth of adequate size. Vessels must have functional toilet and washing facilities accessible to crew at all times. Noise and vibration levels in sleeping areas should be minimized to support genuine rest. Flag states set the detailed technical specifications, but the convention establishes the floor that all ratifying countries must meet or exceed.
Food and water standards
Vessel owners are responsible for ensuring that sufficient food of adequate nutritional value and quality is provided free of charge during the voyage. Potable drinking water must also be available at all times. If a vessel cannot carry sufficient food for the full voyage, the flag state may permit alternative arrangements, but these must be documented and approved in advance. Poor food and water conditions onboard have historically been associated with vessels where other labor abuses also occur, so auditors often treat catering standards as a proxy indicator of overall crew welfare.
Which countries have ratified C188 and how does flag state jurisdiction work?
As of 2026, more than 20 countries have ratified ILO C188, including a number of significant fishing nations and major port states. Ratifying countries include Argentina, Bosnia and Herzegovina, Estonia, France, Lithuania, Morocco, Norway, South Africa, and Uruguay, among others. The European Union has also incorporated C188 requirements into its own legal framework, meaning EU-flagged vessels and vessels calling at EU ports may face C188-aligned inspections regardless of the flag state’s own ratification status.
Under international maritime law, the flag state, meaning the country whose flag the vessel flies, holds primary jurisdiction over labor conditions onboard. Flag state authorities are responsible for inspecting vessels, certifying compliance, and enforcing penalties for violations. However, port states also have the authority to inspect foreign-flagged vessels calling at their ports under port state control (PSC) agreements, and some port states apply C188 standards to all vessels regardless of flag.
This creates a layered enforcement environment. A vessel flagged in a non-ratifying country could still face C188-style scrutiny if it calls at a port in the EU, Norway, or another jurisdiction that applies equivalent standards. For supply chain buyers, this means the flag state alone does not determine the compliance risk profile of a vessel.
How does non-compliance with C188 expose brands and retailers to supply chain risk?
When a vessel supplying your product does not meet ILO C188 standards, the risk does not stay at sea. Brands and retailers sourcing from non-compliant vessels could face regulatory penalties, import restrictions, reputational damage, and legal exposure under an expanding body of supply chain due diligence legislation in jurisdictions such as the EU and the USA.
The EU’s Corporate Sustainability Due Diligence Directive (CS3D) and forced labor import regulations increasingly require companies to demonstrate that they have actively verified labor conditions throughout their supply chains, not simply relied on supplier declarations. Retailers found to have sourced from vessels with documented labor violations could face product bans, fines, and public scrutiny that may be difficult to recover from.
Beyond regulatory exposure, consumer and NGO scrutiny of seafood labor practices has intensified. Investigative reports linking named brands to vessels with poor crew conditions have resulted in significant reputational damage and retailer delisting. The risk is not hypothetical: it has affected major tuna brands in recent years, and the regulatory environment is tightening further in 2026.
For procurement and supply chain managers, the practical implication is that supplier declarations and paper certifications may not be sufficient. Buyers increasingly need verifiable, documented evidence that the vessels in their supply chains meet C188 labor standards, and they need that evidence to be audit-ready before a problem surfaces.
How can digital traceability tools verify C188 compliance at the first mile?
Digital traceability tools can verify C188 compliance at the first mile by capturing vessel activity data in real time via satellite AIS and VMS, linking that data to crew documentation, social audit records, and labor certification evidence at the point of catch. This approach moves compliance verification upstream, before fish enters processing, rather than relying on retrospective document checks after the supply chain has already moved on.
Effective first-mile traceability for labor compliance typically combines several data streams. Satellite tracking can flag patterns associated with forced labor risk, such as vessels that remain at sea for unusually long periods, conduct at-sea transshipment outside monitored ports, or operate in areas with limited oversight. These signals, cross-referenced with vessel registry data and port state inspection records, give buyers a much richer picture of labor risk than a supplier-provided certificate alone.
Social compliance certifications such as BSCI/Amfori, SMETA, the FISH Standard for Crew, and Fair Trade USA provide structured audit evidence of working conditions onboard. When these are linked directly to a specific batch’s Raw Material ID rather than held as standalone documents, they become part of a verifiable, auditable record that travels with the product through the supply chain.
SmarTuna’s digital traceability platform integrates satellite vessel tracking, social audit data, and labor certification records into a single, batch-level record from the moment of catch. This gives supply chain buyers and retailers the kind of documented, first-mile labor evidence that C188 compliance verification increasingly demands.
Frequently Asked Questions
How do I know if my supplier's vessels are actually covered by ILO C188?
Coverage under C188 depends on vessel length (24 meters or more), the flag state’s ratification status, and how broadly the ratifying country has chosen to apply the convention. However, even vessels below the 24-meter threshold or flagged in non-ratifying countries may be subject to equivalent standards if they call at EU or Norwegian ports. The safest approach is to apply C188 standards as a baseline for all commercial fishing vessels in your supply chain, regardless of flag or size, rather than relying on technical exemptions that may not hold up under port state control inspections.
What are the most common C188 compliance failures found during port state control inspections?
The most frequently cited deficiencies during PSC inspections relate to incomplete or missing fishing vessel work agreements (FVWAs), inadequate rest hour records, and substandard accommodation conditions. Inspectors also commonly flag expired medical fitness certificates and the absence of documented social security coverage for crew members. These are not obscure technical failures — they are the first documents an inspector will ask for, which means they are also the first gaps a supply chain buyer should be verifying before a vessel enters their sourcing network.
Can a vessel be C188-compliant on paper but still pose a forced labor risk?
Yes, and this is one of the most important practical limitations of document-based compliance checks. Vessels can carry signed work agreements and valid certificates while still operating under conditions that amount to forced labor — for example, through wage withholding, debt bondage, or physical confinement that never appears in official paperwork. This is why satellite-based behavioral indicators (such as unusually long time at sea, at-sea transshipment, or operation in unmonitored areas) are increasingly used alongside document audits to identify vessels where the on-paper record may not reflect actual crew conditions.
What should a procurement team do if a key supplier cannot produce C188-compliant documentation?
The first step is to formally document the gap and issue a corrective action request with a defined remediation timeline — this creates an audit trail showing your team identified and acted on the issue. Depending on the severity and the supplier’s response, you may need to escalate to a third-party social audit, temporarily suspend sourcing from the affected vessels, or require the supplier to obtain a recognized labor certification such as the FISH Standard for Crew before resuming supply. Doing nothing is the highest-risk option, particularly given the direction of EU and US supply chain due diligence legislation, which increasingly places the burden of proof on the buyer.
How often should vessel labor compliance be re-verified, and what triggers an out-of-cycle review?
At a minimum, labor compliance documentation — including FVWAs, medical certificates, and rest hour records — should be re-verified annually or whenever a vessel changes flag, ownership, or skipper. Out-of-cycle reviews should be triggered by port state control detentions, negative findings in investigative media or NGO reports, failed social audits at a linked processing facility, or behavioral anomalies flagged by satellite tracking data. Treating compliance as a one-time onboarding check rather than an ongoing monitoring process is one of the most common and costly mistakes procurement teams make.
Do social compliance certifications like SMETA or the FISH Standard for Crew fully satisfy C188 verification requirements?
These certifications provide valuable, structured evidence of working conditions and are widely recognized by retailers and auditors, but they are not automatically equivalent to C188 compliance verification. SMETA audits, for example, cover a broad range of labor standards but are not fishing-specific, while the FISH Standard for Crew is purpose-built for fishing vessel labor conditions and maps more directly onto C188 provisions. The key limitation of any certification is that it reflects conditions at the time of the audit — linking certification records to specific vessel batches and combining them with ongoing satellite monitoring gives buyers a much stronger and more defensible compliance position than a standalone certificate.
What is the repatriation obligation under C188, and why does it matter for supply chain buyers?
Under C188, vessel owners are required to ensure that fishers can be repatriated at no cost to themselves when their work agreement expires, when they are landed due to illness or injury, or when the vessel is lost or wrecked. This obligation matters for supply chain buyers because failure to repatriate crew is one of the clearest indicators of severe labor abuse — it is often associated with vessels where workers are effectively trapped at sea. When conducting due diligence on suppliers, buyers should confirm that vessel owners have documented repatriation procedures and, where possible, that these are backed by insurance or a financial guarantee, as C188 recommends.