Occupational injury and disease has been declared a national priority in Bangladesh. However critical gaps remain in improving work safety in small-scale peri-urban factories in Kamrangirchar, a perourban area in Dhaka. We aimed to assess the feasibility of collaborating with owners and workers to design and implement interventions to improve work safety in two metal factories in Kamrangirchar, Here we present the finding and lessons learned from a participatory mixed method before-and-after study articulated over four phases.