Wärtsilä has signed the United Nations Global Compact initiative and supports its ten principles with respect to human rights, labour, the environment, and anti-corruption. Wärtsilä is committed to aligning its strategy, culture, and day-to-day operations with these principles, and to engage in collaborative projects that advance sustainable development. Wärtsilä's Code of Conduct and sustainability approach provide the main framework for promoting the principles within the company’s sphere of influence.
Wärtsilä has joined the Sustainable Shipping Initiative (SSI) and is a signatory to its Vision for a Sustainable Shipping Industry in 2040. The initiative brings together some of the most prominent companies in the maritime sector. Wärtsilä has also signed the Finnish Business and Society's (FIBS) Diversity Charter, and an Energy Efficiency Agreement whereby Finnish industry voluntarily endeavours to use energy more efficiently for the period 2017-2025. Wärtsilä North America Inc. has signed the Customs Trade Partnership Against Terrorism (C-TPAT) agreement.