MLC 2006 Compliance Crewing: A Practical Guide for Owners and Managers
A port state control officer boards, asks for the crew list, and then asks to see three seafarer employment agreements. Within ten minutes the inspection has established more about your crewing operation than any audit report will. MLC 2006 compliance crewing is judged on documents that were created months earlier, ashore, by people who will never meet the inspector.
That is why compliance belongs in the crewing office rather than in a filing system. Wages, contracts, certificates, rest hours and repatriation arrangements are all crewing decisions before they become inspection findings. A vessel does not fail an MLC inspection because of something that happened at the gangway. It fails because of something agreed, or not agreed, when the seafarer was recruited.
This guide covers what the Maritime Labour Convention and STCW require in practice, which documents inspectors examine most closely, what port state control is actually finding, how to build a file that survives scrutiny, and what changes are coming in 2027. It is written for crewing and compliance professionals who already know the conventions exist and need to know where the real exposure sits.
What MLC 2006 Requires From a Crewing Operation
The Maritime Labor Convention, adopted by the International Labor Organization in 2006 and often described as the fourth pillar of international maritime regulation alongside SOLAS, MARPOL and STCW, consolidates decades of seafarer labor standards into a single instrument. For crewing teams, the useful way to read it is by title.
The five titles in plain terms
Title 1, minimum requirements for seafarers to work on a ship. Minimum age, medical fitness certification, training and qualification, and the rules governing recruitment and placement services.
Title 2, conditions of employment. Seafarer employment agreements, wages, hours of work and rest, entitlement to leave, repatriation, compensation for ship loss, manning levels, and career development.
Title 3, accommodation, recreational facilities, food and catering. Largely a technical and catering matter, though crewing owns the cook certification requirement.
Title 4, health protection, medical care, welfare and social security protection. Onboard medical care, shipowner liability for sickness and injury, health and safety protection, access to shore welfare facilities, and social security.
Title 5, compliance and enforcement. Flag state responsibilities, port state responsibilities, and the obligations of recruitment and placement services.
Crewing touches Titles 1, 2 and 5 constantly, and Title 4 more often than most teams expect.
The MLC certificate and the DMLC
Certified vessels carry a Maritime Labour Certificate and a Declaration of Maritime Labour Compliance. The DMLC has two parts, and the distinction matters. Part I is issued by the flag state and lists the national requirements. Part II is written by the shipowner and describes the measures adopted to meet them on that specific ship.
DMLC Part II is where many operations become exposed. It is a self-written statement of what you do, and an inspector will test practice against it. A Part II that promises a procedure the crewing office does not actually follow creates a finding that would not have existed had the document been written more modestly and accurately.
Which vessels and which people are covered
The Convention applies broadly to ships ordinarily engaged in commercial activities, with certification requirements generally attaching to ships of 500 gross tonnage or more on international voyages. Fishing vessels, warships and vessels of traditional build fall outside its scope.
The definition of seafarer is wider than crewing teams often assume. It covers any person employed, engaged or working in any capacity on board, which can include catering staff, hotel personnel on passenger vessels, and some technicians and riding squads. Where doubt exists, the flag state determines the matter. Treating a category of worker as outside the Convention without checking is a common and expensive assumption.
One point deserves particular attention for operators with US-flag tonnage. The United States has not ratified MLC 2006, so US-flag vessels are not certified under it by their flag administration. Those vessels still call at ports in states that have ratified, where the no more favourable treatment principle allows port state control to inspect them against the Convention's standards regardless. Many US operators therefore seek voluntary statements of compliance and run their crewing to MLC standards anyway. Operators running mixed fleets should assume the standard applies commercially even where it does not apply as flag law.
The Seafarer Employment Agreement Is the Document Inspectors Reach For First
The seafarer employment agreement, universally shortened to SEA, is the single most examined crewing document in the world. It is also among the most frequently deficient.
An SEA must be signed by both the seafarer and the shipowner or a representative, and the seafarer must have had an opportunity to review and seek advice before signing. Each seafarer keeps an original signed copy, and a copy stays on board and is available for inspection. The agreement must set out, at minimum:
The seafarer's full name, date of birth and place of birth
The shipowner's name and address
The place and date the agreement was entered into
The capacity in which the seafarer is employed
The wage or formula used to calculate it
Paid annual leave entitlement or the formula for calculating it
The termination conditions, including notice periods for both parties
Health and social security benefits provided by the shipowner
Repatriation entitlement
Reference to any applicable collective bargaining agreement
For agreements of fixed duration, the expiry date
Recurring failures follow a pattern. Agreements signed only by the seafarer, with no countersignature. Agreements referencing a collective agreement that is not carried on board. Wage formulas that do not reconcile to the wage accounts. Extensions handled by informal email rather than a documented amendment. Copies held ashore but not aboard.
Each of these is fixable in the crewing office at no cost and expensive to fix at a berth. The practical control is simple: before any seafarer joins, someone ashore confirms that a complete, correctly signed SEA exists in both locations, and that any referenced collective agreement is aboard.
Regulation 1.4 and the Rules Governing Recruitment and Placement
Regulation 1.4 governs recruitment and placement services, and it applies whether crewing is handled in-house or through an agency. Three principles matter most.
Seafarers pay nothing. No fees or other charges for recruitment, placement or obtaining employment may be borne directly or indirectly by the seafarer, other than the cost of the statutory medical certificate, the national seafarer's book and a passport. Charging seafarers placement fees is among the clearest breaches available, and it attracts enforcement attention.
Services must be regulated and operated to standard. Recruitment and placement services operating in member states must be licensed, certified or otherwise regulated, maintain registers of seafarers placed, ensure candidates are qualified and hold the documents required, and verify that employment agreements meet the Convention's requirements.
A system of protection must exist. Services must maintain insurance or an equivalent measure to compensate seafarers for monetary loss resulting from the service's failure to meet its obligations, or the shipowner's failure to meet obligations under the SEA.
There is a further obligation that owners sometimes overlook. Shipowners using recruitment and placement services based in countries that have not ratified the Convention must ensure, so far as practicable, that those services meet the Convention's requirements anyway. Outsourcing crewing does not outsource responsibility. When a manning agent falls short, the finding attaches to the ship.
For owners, the practical consequence is that agency selection is a compliance decision rather than a procurement one. Ask to see the licence or certification, the register system, the insurance arrangement and the process for verifying candidate documentation before signing an agreement.
STCW Certification Requirements in Day-to-Day Crewing
STCW governs competence rather than conditions, and it operates through certificates. Crewing teams deal with four categories.
Certificates of competency. Issued by administrations for licensed positions such as master, chief mate, officer in charge of a navigational watch, chief engineer and second engineer, with limits by tonnage, propulsion power and area of operation.
Certificates of proficiency. Covering specific functions such as basic safety training, advanced firefighting, survival craft and rescue boats, medical first aid, ship security awareness and designated security duties, plus tanker, gas and chemical familiarisation where applicable.
Flag state endorsements. A certificate issued by one administration must be recognised by the flag state of the vessel. Endorsement processing takes time and is frequently the step that delays a joining, particularly when a new nationality is introduced to a fleet.
Documentary evidence. Medical fitness certification, records of seagoing service, and evidence of refresher training where required.
Three operational realities cause most trouble. The first is refresher requirements: certain proficiencies require periodic revalidation, and a seafarer who has been ashore for an extended period may need courses before joining. The second is validity against the assignment rather than the joining date, since a certificate expiring mid-contract creates a problem at sea rather than in port. The third is fraudulent documentation, which the IMO continues to address through reporting mechanisms and moves toward digital certificate verification. Verifying certificates directly with the issuing administration remains the only reliable defence.
Rest hours sit at the intersection of STCW and MLC, and they deserve separate attention. Both instruments set limits on hours of work and minimum hours of rest, and both require records. Records that show perfect compliance on a vessel with a demanding port rotation invite scrutiny rather than deflect it. Recent seafarer research has highlighted widespread adjustment of work and rest records, and inspectors are alert to it. The durable fix is manning the vessel adequately, not recording it more creatively.
Where MLC and STCW Overlap, and Where They Do Not
Confusing the two instruments leads to gaps. A short comparison clarifies the boundary.
Purpose. STCW sets minimum standards of training, certification and watchkeeping so that seafarers are competent. MLC sets minimum standards for living and working conditions so that seafarers are treated decently.
Governing body. STCW comes from the International Maritime Organization. MLC comes from the International Labour Organization.
What it certifies. STCW certifies the individual. MLC certifies the ship, through the Maritime Labour Certificate and DMLC.
Where they meet. Minimum age, medical fitness, training and qualification requirements, and hours of work and rest all appear in both frameworks. MLC Title 1 explicitly requires that seafarers are trained or qualified for their duties, which imports the STCW standard.
Where they diverge. Wages, employment agreements, repatriation, leave, accommodation, catering and social security are MLC territory alone. Competence standards, simulator training, watchkeeping arrangements and certificate structures are STCW territory alone.
The practical implication for crewing: a seafarer can be fully STCW compliant and still create an MLC deficiency, and a vessel can hold a valid Maritime Labour Certificate while carrying an officer whose endorsement is not recognised by the flag. Both checks have to run, and they check different things.
What Port State Control Actually Finds
Inspection data is the most useful guide to where enforcement pressure actually lands, and the recent picture is clear.
The Paris MoU 2025 Annual Report, published in mid-2026, recorded 16,474 inspections across the region, with deficiencies found on 9,879 ships and 688 vessels detained. The regional detention rate rose to 4.18 percent, up from 4.03 percent in 2024 and 3.81 percent in 2023, and refusals of access increased to 19. More than 51,000 deficiencies were recorded in total, including 4,744 detainable ones.
Two findings matter for crewing teams. First, deficiencies relating to health protection, medical care, welfare and social security protection under MLC Title IV accounted for around 10 percent of all recorded deficiencies, placing them among the top three categories alongside fire safety and structural or electrical items. Second, at the individual deficiency level, seafarers' employment agreements appear consistently among the most common findings across recent reporting years.
The Paris MoU also ran a concentrated inspection campaign on crew wages and seafarer employment agreements under MLC 2006. Of the ships targeted in that campaign, a small percentage were detained specifically for detainable deficiencies tied to seafarer rights and wage provisions. The number of detentions was modest, which reflects reasonable general compliance, but the campaign confirms that wage and contract documentation is an active enforcement focus rather than a background formality.
Read together, the data supports a straightforward conclusion. Crewing documentation is not a low-risk area of port state control. It sits near the top of the findings table, it is inspected deliberately through targeted campaigns, and detention rates overall are trending upward rather than easing.
Regional variation is worth planning around. The Paris and Tokyo memoranda account for the large majority of detentions worldwide, and each runs its own inspection campaigns and targeting factors. Flag performance feeds directly into how often a vessel is selected, with poorly performing flags recording detention rates several times the regional average. Ship risk profile, company performance, time since last inspection and previous deficiency history all influence selection. An operator with a recent detention should expect closer attention on subsequent calls, which makes the quality of MLC 2006 compliance crewing records more consequential immediately after a bad inspection rather than less.
Building an MLC 2006 Compliance Crewing File That Survives Inspection
Flag state inspection readiness comes from a small number of controls applied consistently, not from a large document library. The following structure works for most operations.
Maintain a pre-joining clearance checklist per seafarer. Signed SEA in both locations, valid certificate of competency with flag endorsement, all required certificates of proficiency, medical certificate valid through the assignment, seafarer's identity documents, and any type-specific training required for the vessel. One person signs it off before travel is booked.
Track expirations forward, not backward. Run a report on every certificate and medical certificate expiring within the next six months across the fleet. Renewals begun late become mid-contract problems.
Keep the collective agreement aboard where one is referenced. If the SEA refers to a collective bargaining agreement, the agreement itself forms part of the employment terms and must be available for inspection.
Reconcile wage accounts monthly. Wages paid should reconcile to the SEA formula, to the hours records and to the wage account statements provided to the seafarer. Where allotments are made, confirm they reached the intended accounts.
Keep hours of work and rest records honest and reviewed ashore. Someone ashore should read them, look for patterns that indicate under-manning, and act on what they show.
Confirm DMLC Part II describes actual practice. Review it annually against what the crewing office really does. Amend the document or amend the practice, but do not leave them divergent.
Document the recruitment and placement chain. Hold current evidence of licensing, certification and insurance for every manning agent used, plus the contractual terms that place Convention obligations on them.
Keep repatriation arrangements ready. Financial security certification for repatriation and for abandonment must be carried aboard and posted where seafarers can see it. Inspectors check for the posted copy specifically.
Abandonment deserves its own note, since the financial security requirements introduced by earlier amendments are now a standard inspection item. The certificate must cover outstanding wages and entitlements for a defined period, repatriation costs, and essential needs including food, accommodation, medical care and fuel for survival aboard. Owners should confirm the certificate is current, matches the vessel and the shipowner named on the other MLC documents, and is displayed rather than filed. Mismatched entity names between the certificate, the DMLC and the Maritime Labour Certificate have generated deficiency notices in the past, which is precisely the kind of avoidable finding a document review catches.
Run internal verification between external audits. A short quarterly self-check across a sample of crew files finds the same issues an inspector would, at a fraction of the cost.
What Is Changing: The 2025 MLC Amendments and the STCW Comprehensive Review
Two regulatory workstreams will reshape crewing obligations, and both have timelines worth planning against now.
MLC amendments adopted in 2025. The fifth meeting of the Special Tripartite Committee met in Geneva in April 2025 and adopted a package of amendments, which the International Labour Conference approved in June 2025. They are expected to enter into force on 23 December 2027.
The package addresses violence and harassment, including sexual harassment, bullying and sexual assault. It strengthens repatriation provisions, including the principle that repatriation should be facilitated without discrimination and that the shipowner bears defined minimum costs. It calls for seafarers to be recognised as key workers with measures to support crew changes, shore leave, repatriation and access to medical care ashore. It also adds guidance on correctly sized personal protective equipment and on the provision of menstrual hygiene products aboard.
For crewing teams, the practical work is procedural. No new inspection items have been added to the DMLC, but DMLC Part II procedures will need updating to reflect the new requirements, and flag states will implement through national legislation. Policies on harassment, reporting routes and investigation processes should be drafted and tested well before the entry into force date, since a policy written in December 2027 will not have evidence of implementation behind it.
The STCW comprehensive review. The IMO is conducting the most substantial revision of STCW since the Manila Amendments of 2010. Phase 1 identified more than 400 gaps. Phase 2, the drafting stage, is now under way, and the Sub-Committee on Human Element, Training and Watchkeeping considered more than 160 submissions at its twelfth session in February 2026.
Topics under discussion include whether structured simulator training can partially substitute for seagoing service, the adequacy of ECDIS training, competence requirements for alternative fuels, digital certificate verification to counter fraud, and how leadership training should reflect mental health and cultural awareness. A parallel workstream on fatigue and hours of work and rest has also been launched.
Nothing here changes obligations tomorrow. What it does change is planning. Owners investing in training pathways, simulator capability or certificate verification systems should expect the ground to move, and should avoid committing to arrangements that assume the current framework will hold unchanged through the next decade.
Compliance Failures That Start in the Crewing Office
Signing seafarers to templates nobody reviews. SEA templates drift out of alignment with flag requirements and collective agreements. Review them annually against the flag state's current guidance.
Letting a manning agent operate without verified credentials. Regulation 1.4 obligations follow the ship. Verify licensing and insurance at onboarding and re-verify annually.
Booking travel before documents clear. Changed tickets and hotel nights cost real money, and a seafarer turned away at immigration for a visa issue creates a manning shortfall as well.
Managing extensions informally. A contract extended by messaging app is not a documented variation. Extensions need written amendment, seafarer agreement and updated records.
Treating rest hour records as an administrative task for the vessel. Records nobody ashore reviews are records nobody is managing. Persistent breaches point to a manning problem that only the office can solve.
Assuming a job title places someone outside the Convention. Riding squads, technicians, catering and hotel staff frequently qualify as seafarers. Check with the flag state rather than assuming.
Forgetting that the cook needs a certificate. Title 3 requires that ships' cooks are trained, qualified and found competent for the position, and the requirement is checked. Crewing teams focused on deck and engine certification sometimes treat catering as a lower-priority hire, then discover the gap during an inspection.
Writing an aspirational DMLC Part II. Describe what you do. An inspector comparing your own document to your actual practice is the least defensible position available.
How Core Group Resources Supports Compliant Crewing
Core Group Resources operates as an MLC certified crewing provider, which matters for a specific reason. Under Regulation 1.4, the standard of the recruitment and placement service becomes part of the owner's compliance position. Working with a certified provider means the licensing, register maintenance, candidate verification and financial protection requirements are already documented rather than something an owner has to establish and audit independently.
In practice, CGR's crewing workflow puts compliance ahead of presentation. Certificates of competency and proficiency are verified against the vessel and the assignment period rather than the joining date. Flag state endorsement requirements are identified early, since endorsement processing is a frequent cause of delayed joinings. Medical certification, drug and alcohol testing and identity documentation are cleared before mobilisation. Seafarer employment agreements are prepared to meet the Convention's content requirements and executed properly by both parties.
For owners running mixed fleets, the more valuable contribution is usually consistency. Vessels under different flags carry different national requirements, and crewing teams managing several regimes at once are where errors concentrate. Running documentation through a single process that accounts for each flag's requirements removes the variation that inspectors find.
The teams that get the most from this arrangement treat their crewing partner as part of the compliance system rather than as a supplier. Sharing the DMLC Part II, the flag state's requirements and the audit schedule lets the crewing side align its file to what will actually be inspected.
Frequently Asked Questions
Does MLC 2006 apply to vessels under a flag that has not ratified it? Certification obligations do not apply through the flag, but the practical effect is limited. Ships calling at ports in ratifying states can be inspected against the Convention's standards under the no more favourable treatment principle. Operators of US-flag tonnage in particular should plan crewing to MLC standards, and many obtain voluntary statements of compliance.
Who can legally be charged for recruitment? Not the seafarer. Fees for recruitment, placement or obtaining employment must not be borne directly or indirectly by seafarers, with narrow exceptions for the statutory medical certificate, the national seafarer's book and a passport. The shipowner bears recruitment costs.
What makes a seafarer employment agreement deficient? Missing signatures from the shipowner side, absence of a copy aboard, referencing a collective agreement that is not carried on the ship, incomplete content such as missing repatriation or termination terms, and wage formulas that do not reconcile to wage accounts. All are avoidable ashore.
How do MLC and STCW differ? STCW is an IMO instrument certifying individual competence through training and certification. MLC is an ILO instrument certifying the ship's employment and living conditions. They overlap on minimum age, medical fitness, qualification and rest hours, and diverge everywhere else.
When do the latest MLC amendments take effect? The amendments adopted in April 2025 and approved by the International Labour Conference in June 2025 are expected to enter into force on 23 December 2027. They cover violence and harassment, repatriation, shore leave and key worker recognition, among other matters. Procedures under DMLC Part II will need updating.
How often should crew files be audited internally? Quarterly sampling across a fleet is a reasonable baseline, with a fuller review before any scheduled flag state inspection or renewal survey. The purpose is to find what an inspector would find, early enough to correct it without commercial consequence.
Conclusion
MLC and STCW compliance is decided by decisions made ashore, months before an inspector boards. Agreements drafted properly, certificates verified against the assignment, manning agents with documented credentials, honest rest hour records and a DMLC Part II that describes real practice will carry a vessel through most inspections without difficulty. Detention rates are rising and crewing documentation sits among the most frequently cited deficiency areas, so the margin for informal practice has narrowed. With the 2025 MLC amendments arriving in December 2027 and STCW under its most substantial revision in over a decade, crewing teams that build disciplined processes now will absorb those changes as adjustments rather than emergencies.
Call to Action
If your crew files, DMLC Part II and manning agent documentation have not been reviewed against current requirements this year, ask the Core Group Resources crewing team for a compliance walkthrough. You will get a clear view of where the gaps are before an inspector finds them.