As the construction workers were impacted during the Covid-19 period from social distancing to eventual lack of human interaction, it is necessary to understand the changed social and psychological states of construction workers to manage and improve their performance. This study aims to investigate the social and psychological impact of Covid-19 on the performance of construction projects. The survey was carried out by construction professionals including construction managers, superintendents, and laborers. It was found that anxiety and depression, and health risk concern changed significantly in the pre and post-pandemic period. The results also highlighted health risk concerns, sense of belonging, income equality, job stability, stress management, knowledge, and financial stability as the most impactful factors influencing the workforce's performance on construction projects. This study contributes to providing the managerial implications and guidance for improving the construction workforce including managers' and site laborers' performance in the post-pandemic period.