The issue of sustainability and corporate social responsibility (CSR) is rapidly moving up the priority list of business leaders as the awareness of incorporating “green” into corporate strategy is also becoming an urgent item on the agenda of key stakeholders. In light of this, integrating the idea that digitalization promotes entrepreneurial activities and corporate sustainability initiatives offering countless opportunities for environmental sustainability initiatives becomes a crucial effort. Nevertheless, the effectiveness of CSR and digitalization on employees’ commitment has remained largely neglected. This study explores specific employees’ outcomes in terms of sustainability behaviors, developing a framework focusing on the impact of some internal and external CSR activities on employees’ commitment toward sustainability under the theoretical lenses of Humane Entrepreneurship theory and Sustainable Human Resources Management. A survey on 325 employees of mechanical firms operating in the Province of Naples has been administered. We found that employees tend to be more committed when they perceive a concrete engagement and performance of their organization in achieving green goals oriented toward sustainability. Moreover, the perceived clarity of firms’ communication about sustainability goals positively impacts on employees’ commitment toward sustainability. Implications for theory and practice are finally discussed.