What is the MLC 2006?
The Maritime Labour Convention 2006 (MLC 2006) represents the most comprehensive international labour framework ever established for seafarers. Adopted by the International Labour Organization (ILO), the MLC 2006 consolidates 68 existing ILO maritime conventions and protocols into a single, unified instrument.
The Convention entered into force on August 20, 2013, and applies to all ships engaged in commercial maritime activity (with limited exceptions for military vessels, fishing vessels, and certain non-commercial operations). For superyacht owners and managers, understanding and achieving MLC compliance is non-negotiable—it affects crew welfare, flag state inspections, and port state control enforcement.
The MLC 2006 has been amended twice since adoption: in 2014 and again in 2022. The 2022 amendments introduce new provisions on cybersecurity and updated guidance on remote inspection protocols (relevant for vessels operating during pandemic conditions). All amendments are binding on flag states that have ratified them.
Core Principle: "Work in Decent Conditions"
Unlike SOLAS (which prioritizes vessel safety) or MARPOL (which addresses environmental protection), the MLC 2006 is fundamentally about human dignity. It establishes minimum standards for employment, accommodation, food provisions, medical care, and dispute resolution for all seafarers—regardless of vessel size or flag state.
For superyacht owners, this philosophical difference is important: MLC compliance isn't merely a regulatory box-checking exercise. It reflects a commitment to seafarer welfare that, when properly implemented, improves crew retention, reduces training costs, and enhances operational reliability.
Seafarer Employment Agreements (SEA)
The Seafarer Employment Agreement (SEA) is the cornerstone of MLC 2006 compliance. Every seafarer aboard a compliant vessel must have a written SEA in place before employment commences.
Essential SEA Components
The SEA must specify: the work to be performed and duties required; compensation (wages, overtime, bonuses); repatriation arrangements and costs; disciplinary procedures; and dispute resolution mechanisms. The agreement must be in a language the seafarer understands, and a copy must be provided to the seafarer before signing.
Flag state authorities review SEAs during Port State Control (PSC) inspections. Non-compliant agreements—including those lacking required provisions or using unclear language—constitute a deficiency that can detain vessels until corrected.
Special Provisions for Superyacht Crew
Superyachts often employ mixed crews: some on commercial employment contracts (subject to full MLC requirements) and some in "private household service" (which enjoys limited MLC exemptions). This mixed-crew arrangement is increasingly scrutinized by port states, as vessel operators sometimes misclassify crew to evade MLC protections.
Mercer Yachting recommends full MLC compliance for all crew, regardless of classification. The cost of compliance is negligible compared to the detention risk and reputational damage from MLC violations.
Amendments and Updates
SEAs should be reviewed and updated annually to reflect changes in compensation, responsibilities, or company policy. When significant changes occur (e.g., a change in flag state), new SEAs must be executed. Crew changes, even temporary substitutions, require SEAs for replacement crew before departure.
Working Hours & Rest Periods
Standard A2.3 of the MLC 2006 establishes maximum working hours and minimum rest periods for all seafarers. These provisions directly address fatigue, which causative analysis identifies as a factor in over 80% of maritime casualties.
Maximum Working Hours
Standard A2.3 permits a maximum of 14 hours of work per day and 72 hours per week (averaged over a reference period, typically one month). Beyond these maximums, seafarers must be given compensatory rest. These limits apply to all crew, including captains and officers.
Important: "working hours" includes all time on duty—not just time actively engaged in shipboard duties. Time standing watch, performing maintenance, or conducting training counts toward the 14-hour daily limit and 72-hour weekly threshold.
Rest Period Requirements
Minimum rest periods are: 10 consecutive hours per 24-hour period, or 77 hours per seven-day period (averaged over a reference period). These rest periods may be split into two periods, but no single period may be less than 6 hours.
In emergencies (fire, collision, medical emergency), working hours limits can be exceeded, but only to the extent necessary. Once the emergency is resolved, compensatory rest must be provided—typically within five days for short-term overages.
Watch Schedules and Record Keeping
Flag states require vessels to maintain watch schedules demonstrating compliance with Standard A2.3. These schedules should be posted in crew quarters and the wheelhouse. Many modern vessels use digital crew management systems that automatically calculate and track working hours.
Port State Control inspectors verify compliance by requesting crew interviews and examining watch records and log books. Discrepancies between documented schedules and actual crew practices result in deficiencies.
Accommodation & Food Standards
Standard A3.1 of the MLC 2006 establishes minimum standards for crew accommodation and food supply. These provisions ensure that crew quarters are safe, sanitary, and adequate for health and wellbeing.
Accommodation Standards
Minimum requirements include: proper ventilation and temperature control; adequate lighting (both natural and artificial); drainage systems; and sanitary facilities (toilets, showers, laundry). Crew accommodation must not be located where vibration, noise, or heat from machinery spaces create unhealthy conditions.
Cabin sizes are specified: single cabins must provide at least 7.5 square meters; double cabins at least 10.5 square meters. Cabins must include a bunk with a minimum 2-meter length, a clothes locker, and a desk or table. Crew common areas (messrooms, recreational spaces) are mandatory on vessels with more than three crew.
For superyachts, which often feature crew cabins that meet or exceed these standards, the regulatory requirement is easily satisfied. However, Port State Control inspectors examine accommodation systematically—unclean crew spaces or inadequate storage can trigger MLC deficiencies.
Food Supply Requirements
The vessel must provide adequate, wholesome, and varied food supplied in sufficient quantity. Fresh rations must be provided at frequent intervals. Drinking water must be fresh and potable, meeting WHO standards for microbiological and chemical safety.
A crew member with recognized training in food hygiene must oversee food preparation. The galley must maintain proper food storage (refrigeration for perishables) and disposal systems. Records of fresh water testing and food provisioning should be available during PSC inspections.
Dietary Accommodations
Flag states increasingly require vessels to accommodate crew dietary requirements related to religion, allergy, or cultural preferences. This should be documented in the vessel's Standing Orders and communicated to crew during orientation.
Medical Care at Sea
Standard A4.1 of the MLC 2006 requires vessels to establish and maintain measures to protect seafarer health and provide medical care and first aid at sea. This provision has evolved significantly as maritime communications have improved and telemedicine capabilities have expanded.
Medical Equipment and Supplies
Vessels must carry medical equipment and supplies appropriate to the voyage duration and route. At minimum, this includes: first aid kits for deck and engine room injuries; medications for common ailments (pain relief, anti-diarrheal, anti-nausea); and equipment for treating injuries (bandages, splints, stretchers).
The International Maritime Organization specifies minimum medical chest contents based on vessel size and distance from shore. Superyachts operating globally typically carry more comprehensive supplies than the minimum requirement, including emergency medications, defibrillators, and oxygen systems.
Designated Responsible Person
At least one crew member must receive training in first aid and basic medical response. On larger vessels, one crew member should have formal medical certification (Deck Officer Medical, or equivalent). This individual is designated as the vessel's "responsible person" for medical matters.
Telemedicine and Radio Medical Assistance
Modern vessels supplement onboard medical capability with shore-based telemedicine support. The International Maritime Organization's Handbook on Medical Care at Sea (available free from IMO) provides guidance on telemedicine protocols and emergency medical radio procedures.
When offshore, vessels can contact the Coordinating Centre for Mediterranean Rescue (MRCC) or equivalent regional authority to speak with a medical professional. Many commercial superyacht fleets subscribe to dedicated maritime medical services that provide 24/7 telemedicine consultation.
Medical Records and Incident Reporting
Medical incidents aboard vessels must be documented in the ship's medical log. Serious incidents must be reported to the flag state authority. This documentation is required during PSC inspections and is important for insurance and casualty investigation purposes.
Repatriation Rights
Standard A2.5 of the MLC 2006 establishes seafarer rights to repatriation at the vessel owner's expense if unable to continue employment due to termination, illness, injury, or shipowner insolvency.
Repatriation Costs and Responsibility
The vessel owner (or bareboat charterer) is responsible for providing and paying for repatriation to the crew member's home country or country of residence. This includes transportation costs, food, and accommodation during the repatriation process.
Repatriation arrangements must be in place before the crew member joins the vessel. The Seafarer Employment Agreement must specify the repatriation destination and confirm that costs will be covered by the owner.
Medical Repatriation
If a crew member becomes medically unable to work (from illness or injury occurring during employment), the vessel is responsible for repatriating the crew member to a facility where medical treatment is available, then to the crew member's designated repatriation destination.
For superyachts operating internationally, this can be complex. A crew member injured in the Mediterranean, for example, might require helicopter evacuation to a shore-based hospital, followed by air transportation to their home country. The cost can exceed 50,000 EUR. Vessel insurance should include comprehensive crew medical and repatriation coverage.
Insolvency Protection
If the vessel owner becomes insolvent and cannot pay crew wages or provide repatriation, the flag state is required to ensure repatriation at no cost to the crew member. This protection is funded by a guarantee system established by each flag state. Crew members can file claims if the vessel owner fails to perform repatriation obligations.
Onboard Complaint Procedures
Standard A5.2 of the MLC 2006 requires vessels to establish fair and transparent procedures for crew members to raise concerns and lodge complaints regarding alleged violations of the Convention.
Complaint Mechanism Requirements
The procedure must allow crew members to lodge complaints without fear of retaliation. The procedure must include a fair investigation and resolution process. If a complaint cannot be resolved onboard, the crew member has the right to lodge a complaint with the flag state authority, which will investigate and determine if a violation occurred.
Many superyachts establish a simple onboard procedure: crew member submits written complaint to the captain; the captain investigates and provides written response within 7 days. If the crew member is unsatisfied, they may escalate to the vessel owner or flag state.
Protection Against Retaliation
Flag states expressly prohibit any adverse action against a crew member for lodging a complaint in good faith. "Adverse action" includes suspension, dismissal, disciplinary measures, or denial of shore leave. Crew members who believe they experienced retaliation can file a separate complaint with the flag state authority.
Examples of Justiciable Complaints
MLC-compliant complaint procedures address alleged violations of: employment agreements; working hours regulations; accommodation and food standards; medical care; repatriation rights; and wage payment obligations. A crew member might complain, for example, that working hours consistently exceed the Standard A2.3 limits, or that food quality is inadequate.
Complaints must be addressed factually and in good faith. Dismissing a complaint without investigation—or promising investigation but failing to conduct it—itself constitutes an MLC violation.
Flag State Inspections
The flag state (the nation whose flag the vessel flies) is responsible for ensuring MLC 2006 compliance. This is enforced through annual or biennial inspections conducted by the flag state maritime authority or an authorized surveyor.
Inspection Scope and Frequency
Flag state inspections examine: Seafarer Employment Agreements; watch schedules and records; crew accommodation condition; food and fresh water supply; medical equipment and records; crew payroll and wage records; and crew interviews regarding working conditions and complaint procedures.
Most flag states conduct inspections annually for vessels with crew sizes exceeding 10, and biannially for smaller vessels. Vessels with previous MLC deficiencies may be inspected more frequently.
Deficiency Categories
Flag state inspectors categorize violations as either deficiencies (minor non-compliances) or very serious non-compliances (VSSNCs). Examples of deficiencies include: incomplete SEA documentation, outdated medical supplies, or crew interview responses indicating occasional working hour overages.
VSSNCs include: complete absence of SEAs, crew interview evidence of systematic working hour violations, or crew statements indicating hazardous accommodation conditions. VSSNCs may result in detention and are reported to international maritime authorities.
Port State Control (PSC) Inspections
In addition to flag state inspections, port states conduct unannounced PSC inspections when vessels visit their ports. PSC inspectors use similar protocols to flag state inspectors and have authority to detain vessels with VSSNC-level violations until corrected.
For superyacht owners, maintaining consistent MLC compliance is the most effective strategy for avoiding PSC detentions. A single crew member complaint or inspection deficiency can trigger additional PSC scrutiny and lead to operational disruptions.
Sources & References
This article incorporates technical information and best practices from the following authoritative sources:
- International Labour Organization (ILO) MLC 2006: Maritime Labour Convention 2006 and amendments (2014, 2022)
- International Maritime Organization (IMO): SOLAS Convention and STCW Convention standards
- Lloyd's Register & RINA: Classification Society standards for MLC inspection and compliance
- Transport Malta: Malta Merchant Shipping Act (Chapter 234) and crew documentation requirements
- Port State Control (Paris MoU): Inspection protocols and deficiency categorization standards
- EU Directive 2009/13/EC: Implementing the social partner agreement on the MLC 2006
Mercer Yachting recommendations are current as of February 2026 and subject to change based on regulatory updates.