Maritime Labour Convention (MLC)
The Maritime Labour Convention, 2006 is the International Labour Organization treaty establishing minimum working and living standards for seafarers. It covers employment conditions, accommodation, food, health protection, medical care, welfare, and social security. Ratifying states must implement and enforce its requirements for ships flying their flag and cooperate on effective international enforcement.
Definition
Maritime Labour Convention (MLC) is the international labour treaty that sets minimum employment, living, health, welfare, and social-security standards for seafarers.
What is MLC 2006?
The Maritime Labour Convention 2006 (MLC 2006) is the ILO's "seafarers' bill of rights" — a comprehensive international treaty that consolidates 68 prior maritime labour instruments. In force since August 2013, it sets minimum working and living standards for seafarers worldwide. MLC 2006 is enforced by Port State Control under the Paris, Tokyo, and other regional MOUs. A vessel found non-compliant with MLC can be detained and the shipowner faces significant liability. For yacht operators, MLC defines the employment, working, and living conditions that every crew member is entitled to regardless of flag state or nationality.
Core MLC 2006 Requirements
MLC 2006 is organised into five Titles, each addressing a different aspect of seafarer rights and welfare.
Title 1 — Minimum Requirements for Seafarers
Minimum age (16, 18 for hazardous work), medical fitness certificate, STCW training, and seafarer recruitment and placement service standards. No crew member under 16 may work on a vessel.
Title 2 — Conditions of Employment
Written Seafarer Employment Agreement (SEA), wage entitlements (minimum wage guidance by joint ILO-ITF committee), regulated hours of work and rest (maximum 14 hours in any 24-hour period, 72 hours in any 7-day period; minimum 10 hours rest in any 24-hour period), paid annual leave (2.5 days per month minimum), and repatriation at shipowner's expense.
Title 3 — Accommodation, Facilities, Food and Catering
Minimum space requirements for sleeping quarters, mess rooms, sanitary facilities, and recreation. Regular health inspections of accommodation. Quality food and drinking water, with adequate provisions for voyage duration.
Title 4 — Health Protection, Medical Care, and Welfare
Medical care on board and ashore at no cost to the seafarer, sick pay continuation, access to shore-based welfare facilities, and safety and accident prevention programs.
Title 5 — Compliance and Enforcement
Flag state responsibilities: issue Maritime Labour Certificate (MLC Certificate) and Declaration of Maritime Labour Compliance (DMLC) for vessels 500 GT and above in international trade. Port state control: inspect compliance, detain non-compliant vessels. Seafarers have the right to complain directly to PSC.
Seafarer Employment Agreement (SEA)
Every crew member must have a written Seafarer Employment Agreement before joining the vessel. The SEA must include: name and date of birth; name and address of the shipowner; place and date of engagement; position; wages (method of calculation, currency, payment frequency); paid annual leave entitlement; termination conditions; health and social security benefits; and repatriation entitlement. Both the seafarer and a representative of the shipowner must sign the SEA. A copy must be kept on board and accessible to the seafarer at all times.
Rest Hours and Fatigue Management
MLC 2006 Title 2.3 sets binding rest hour requirements that apply to all seafarers. Maximum hours of work: 14 hours in any 24-hour period; 72 hours in any 7-day period. Minimum hours of rest: 10 hours in any 24-hour period; 77 hours in any 7-day period. Rest may be divided into no more than two periods, one of which must be at least 6 hours. Rest hour records must be kept and signed by the master and the seafarer. PSC inspectors routinely check rest hour records. Fatigue-related incidents are treated seriously in marine accident investigations.
MLC for Superyachts
MLC 2006 applies to yachts used commercially (charter) that are 500 GT or above on international voyages. These vessels must carry an MLC Certificate and DMLC. Yachts below 500 GT or purely private vessels are not required to hold formal MLC certification, but the underlying principles — written employment agreements, proper rest hours, adequate accommodation and food — apply in practice and are increasingly required by flag states, charter agents, and insurers. PSC can inspect any vessel for compliance with MLC standards regardless of certification status.
How HelmOps Supports MLC Compliance
HelmOps tracks crew documentation including SEA details, medical certificates, STCW expiry, and rest hour logs. The captain can maintain compliant rest hour records digitally, with the team able to flag rest deficiencies before they become PSC findings. Crew document storage ensures SEAs, medicals, and STCW certificates are organised and accessible during inspections.
MLC Inspections by Flag State and Port State
MLC 2006 Title 5 establishes a two-tier enforcement architecture — flag state certification and port state inspection — designed to create comprehensive coverage of seafarer welfare standards globally. Flag state responsibilities: For vessels of 500 GT or above engaged in international voyages, the flag state must certify that the vessel complies with MLC 2006. Certification involves the flag state (or a recognised organisation acting on its behalf) conducting an inspection of the vessel against MLC requirements, verifying the shipowner's Declaration of Maritime Labour Compliance (DMLC) Part II sets out how compliance will be maintained, and issuing the Maritime Labour Certificate and DMLC Part I (which documents the national requirements implementing MLC 2006 in the flag state). The MLC Certificate is valid for five years with an intermediate inspection between the second and third years. Port state control under MLC: PSC inspectors from any signatory state may inspect any foreign-flagged vessel for MLC compliance. Inspections focus on: Seafarer Employment Agreements — every crew member must have a signed SEA in a language they understand, and a copy must be accessible on board; wage records — pay stubs or wage account records confirming crew are being paid as agreed and on time; hours-of-work-and-rest records — the standardised record showing actual working and rest hours for each crew member, signed by master and crew member at the end of each month; accommodation — sleeping quarters, sanitary facilities, and mess areas inspected against minimum space and condition standards; food and water — adequacy and quality of provisions; medical supplies and the ship's medicine chest — completeness and expiry of medications and medical equipment; and access to welfare services. PSCOs can interview crew members privately, without the master or officers present, to assess whether actual working conditions match the paper record. Crew can also file complaints directly with port state authorities under MLC's seafarer complaint mechanism. A complaint triggers mandatory investigation. MLC inspections are frequently more detailed regarding crew welfare conditions than ISM inspections, which focus primarily on documentation and safety systems. Operators should not assume that passing an ISM audit demonstrates MLC compliance — the two inspections cover substantially different ground.
MLC for Yacht Crew: Seafarer Employment Agreement (SEA) Requirements
The Seafarer Employment Agreement is the cornerstone document of MLC 2006's conditions-of-employment framework. Every seafarer working on a vessel subject to MLC must have a written SEA before joining the vessel. The agreement must be signed by both the seafarer and the shipowner (or a representative authorised by the shipowner, typically the master). A copy must be kept on board and the seafarer must be able to access it at all times. MLC Standard A2.1 specifies the minimum content of every SEA. The agreement must include: Full name, date of birth, and birthplace of the seafarer. Name and address of the shipowner. Place and date of commencement of employment. The capacity (position) in which the seafarer is employed. The amount of wages or the formula used to calculate them, the currency of payment, and the payment frequency. The amount of paid annual leave or the formula used to calculate it — MLC minimum is 2.5 days per month of service. Conditions of termination, including any notice period required by either party. Health and social security benefits provided to the seafarer. The seafarer's entitlement to repatriation at the end of the agreement, including transport and subsistence. The master signs the SEA on behalf of the shipowner. This is not merely procedural: the master's signature binds the shipowner to the terms of the agreement and places responsibility on the master to ensure crew are employed on MLC-compliant terms. If the SEA contains clauses less favourable than the flag state's national MLC-implementing legislation, those clauses are void and the statutory minimum applies. For yacht operators using crew agencies, the placement agency typically prepares the SEA template, but the shipowner (or manager) remains legally responsible for its MLC compliance. Using an agency template does not transfer MLC liability. Operators should ensure their SEA templates are reviewed against the current requirements of their flag state's MLC-implementing legislation, as national requirements may exceed the MLC minimum on specific points.
MLC Amendments: The 2014, 2016, and 2022 Amendments
MLC 2006 has been amended through the ILO's special tripartite committee process on several occasions since entry into force in 2013. These amendments update and strengthen the convention's protections without requiring full ratification by member states — an amendment enters into force automatically for ratifying states that do not object within a specified period. The 2014 amendments (in force 2017) addressed two significant gaps identified in early MLC implementation: financial security for repatriation and financial security for death or long-term disability compensation. The amendments require shipowners to maintain financial security instruments (typically through P&I clubs or specialist underwriters) to ensure that crew can be repatriated at the shipowner's expense and that compensation is available for injury or death. For yacht operators, this means P&I membership or an equivalent financial security arrangement is now an MLC compliance requirement, not merely a commercial prudence matter. PSC can inspect financial security documentation. The 2016 amendments (in force January 2019) addressed harassment and bullying, incorporating ICS/ITF industry guidance on preventing and responding to harassment and bullying aboard ship into the convention's framework. The 2022 amendments (adopted, entering into force 2024) addressed harassment and bullying at sea, updating MLC requirements to explicitly require shipowners to adopt policies addressing harassment and bullying, provide complaint mechanisms accessible to crew, and prohibit retaliation against crew who file complaints. For yacht operators, the practical implication is that crew handbooks and HR policies must reflect anti-harassment obligations, and complaint procedures must exist and be communicated to crew. Operators should monitor flag state circulars and MLC amendment schedules, as amendment implementation may generate new documentation or policy requirements with each cycle.
Frequently Asked Questions
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