The challenges of sustainability and its complexities born out of overexploitation of resources, leading to climate change issues, food wastage, and scarcity, economic and health-related dilemmas, has yet to find their solution in top-down models, taking the form of hierarchical control (rulers), as such, researchers have considered other alternatives to how communities can tackle these issues, and one of such approach is the bottom-up model. Recent research and literature on collective action have focused on sequencing events like regime changes, riots, revolutions, protests, and the founding of social movement organizations. This study ethnographically investigated the relevant factors for collective action and factors influencing individual cooperation in the local community initiative, Food Rescue Gotland, through a four-week participant observation with eight in-depth interviews. The relevant factors identified in this context were a sense of community, passion for sustainability, good atmosphere for work, committed volunteers and trust, availability of resources and goodwill ambassadors, ease of participation, small size, effective communication, and good structure. Significant factors influencing individual cooperation include knowledge about sustainability, a sense of belonging, and a shared sense of community. This study contributes to the broader literature on successful collective action for sustainability in the context of local community initiatives. It contributes further to the replicability of this kind of local community initiative in other communities and awareness of its impact on Gotland Island, Sweden.