| Amendments of 2014 to the MLC, 2006 - 18-Jan-2017 | In Force | 13 Dec 2023 | |
| Amendments of 2016 to the MLC, 2006 - 08-Jan-2019 | In Force | 18 Apr 2024 | |
| Amendments of 2018 to the MLC, 2006 - 26-Dec-2020 | In Force | 13 Dec 2023 | |
| Amendments of 2022 to the MLC, 2006 - 23-Dec-2024 | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |
| - Standard 1.4 – Recruitment and placement | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |
| - Standard A2.5.1 – Repatriation | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |
| - Standard A3.1 – Accommodation and recreational facilities, Guideline B3.1.11 – Recreational facilities, mail and ship visit arrangements, and Guideline B4.4.2 – Welfare facilities and services in ports | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |
| - Standard A3.2 – Food and catering | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |
| - Standard A4.1 – Medical care on board ship and ashore, Guideline B4.1.3 – Medical care ashore, and Guideline B4.1.4 – Medical assistance to other ships and international cooperation | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |
| - Standard A4.3 – Health and safety protection and accident prevention | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |
| - Standard A4.3 – Health and safety protection and accident prevention, and Guideline B4.3.5 – Reporting and collection of statistics | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |
| - Appendix A2-I – Evidence of financial security under Regulation 2.5, paragraph 2 and Appendix A4-I – Evidence of financial security under Regulation 4.2 | Not in force | | Portugal has indicated that it will be bound by the amendment(s) only after a subsequent express notification of their acceptance ( Article XV, para. 8, a) |