Across Indonesia and the wider region, unions including HUKATAN, SPPK-FSPMI, SERBUK, TEIUPM and BWI Asia Pacific are marking Workers’ Memorial Day with an extensive programme of meetings, campaigns, training and advocacy. Activities range from workplace discussions and OSH seminars to international “Too Hot To Work” campaigning, climate justice policy work and legal advocacy. Together, these initiatives highlight the growing impact of heat stress and climate change on workers while strengthening organisation, awareness and collective action for safer conditions.