20 Years of the MLC: What the Maritime Labour Convention Really Means for Your Crew Management

On 23 February 2026, the maritime industry marked the twentieth anniversary of the Maritime Labour Convention (MLC 2006), adopted under the auspices of the International Labour Organization. Often described as the 'bill of rights for seafarers', it remains the global reference text for employment conditions aboard ships. Two decades on, what progress has been made — and where does compliance actually stand in the merchant marine sector?

MLC 2006: The Fourth Pillar of International Maritime Law

The Maritime Labour Convention stands alongside SOLAS, MARPOL and STCW as the fourth pillar of international maritime regulation. It consolidated more than 65 earlier legal instruments into a single framework, now ratified by over 100 states representing more than 91% of global tonnage.

Its scope covers all ships of 500 GT or more engaged in international navigation. It establishes binding minimum standards covering:

• Seafarer employment agreements (duration, termination, repatriation)

• Wages and payment conditions

• Hours of work and rest

• Accommodation, food and living conditions on board

• Health protection and medical care

• Social security and employment protection in cases of seafarer abandonment

Ships subject to the MLC must carry a Maritime Labour Certificate and a Declaration of Maritime Labour Compliance (DMLC I and II), both verified during every Port State Control (PSC) inspection.

Twenty Years of MLC: What Has Actually Changed at Sea

Over two decades, the convention has driven concrete and measurable improvements for merchant seafarers.

A global standard for on-board living conditions

Before the MLC, living conditions varied widely depending on flag state, company policy, and shipowner practices. Today, cabin dimensions, access to fresh air, recreation spaces and internet connectivity are all regulated by specific standards. PSC inspectors check these systematically at every port call.

A safety net against seafarer abandonment

The MLC required shipowners to take out financial security insurance against abandonment. Before this obligation, crews could find themselves stranded in foreign ports with no resources and no prospect of repatriation. The framework was strengthened by 2014 and 2016 amendments, then stress-tested at scale during the COVID crew change crisis.

Mandatory tracking of rest hours

Perhaps the most operationally significant change: the MLC requires detailed records of working and rest hours for every crew member, verifiable at any time by a PSC inspector. This obligation has fundamentally changed administrative practices on board.

Persistent Challenges in 2026: Compliance Remains Incomplete

Despite these gains, the twentieth anniversary was marked by sharp assessments from seafarer organisations. The ILO, Nautilus International and the ITF published converging reports: effective compliance remains inadequate across significant parts of the world fleet.

The most common deficiencies recorded in PSC inspections during 2025-2026:

• Rest hour records poorly maintained, incomplete, or inconsistent

• Failure to pay wages within legally required timeframes

• Outdated or incorrectly completed DMLC I and II documentation

• Non-compliant living conditions, particularly on older vessels

• Gaps in medical coverage for crew members

The COVID pandemic also exposed a structural gap: seafarers are still not recognised as 'essential workers' in most countries. This request has been on the table since 2020 — in 2026, it remains without legislative response in the majority of states.

Rest Hours: The Most Closely Monitored Point in PSC Inspections

This is where PSC inspectors focus most closely — and one of the leading causes of ship detentions worldwide. The MLC rest hour rule is straightforward:

• Minimum 10 hours of rest in any 24-hour period

• Minimum 77 hours of rest in any 7-day period

• Rest may be split into no more than two periods, one of which must last at least 6 consecutive hours

In practice, managing watch rotations, unscheduled port calls, route changes and emergencies makes this tracking genuinely difficult. Many masters still manage these records on paper or in Excel spreadsheets — generating errors, inconsistencies and real risk during inspections.

Incomplete or inconsistent rest hour records are among the most common grounds for ship detention in European, Australian and US ports. For a commercial vessel, a 24- to 48-hour detention means tens of thousands of euros in direct and indirect costs.

Digitising MLC Compliance to Reduce Operational Risk

This is where a dedicated tool makes a concrete difference. The BoatOn Book crew management module enables you to:

• Automatically generate MLC-compliant timesheets with rest thresholds pre-configured to the convention

• Receive real-time alerts when a crew member approaches or exceeds a rest limit

• Access the complete work/rest history for each crew member, from the vessel or from shore

• Export records instantly for a PSC inspection or internal audit

• Manage employment contracts, certifications and crew rotations from a single platform

For the master, this means records that are always up to date and a significantly lighter administrative burden. For the technical superintendent or fleet manager, it means real-time visibility across the entire fleet's compliance — without having to chase each vessel individually.

BoatOn Book is part of a broader operational framework: marine CMMS, digital logbook, regulatory certification tracking, and automated carbon footprint reporting (in partnership with ADEME) — all in one tool, designed for vessels from 15 to 150 metres in merchant shipping, offshore operations and inland waterways.

MLC Also Applies to Commercial Yachts

The Maritime Labour Convention also applies to commercial yachts of 500 GT or more employing paid seafarers. In the professional yachting sector, the same rest hour tracking and contract management challenges apply — with often international crews and frequent rotation schedules. BoatOn Book addresses these needs in this context with the same functionality.

Conclusion: Twenty Years of MLC, Compliance Remains a Daily Challenge

Twenty years on, the MLC 2006 has fundamentally raised the social standards of the world merchant fleet. But real-world compliance remains a day-to-day operational challenge — not just a distant legal obligation. Rest hour traceability, record-keeping, employment contracts, certification management: these are responsibilities that deserve fit-for-purpose tools.

If your team is still managing these obligations on paper or in Excel, it may be time to consider a dedicated solution.

→ Explore BoatOn Book's crew management module — free trial available