Technological progress has sizeable consequences on employment and has reshaped the contents of jobs. A large literature has documented substantial effects of biased technological progress on workers’ labour market outcomes, with heterogeneity depending on their skills and occupations. Yet, its overall effect on workers’ well-being has received limited attention. This project aims to fill this gap, by investigating the consequences of technology adoption in the firm on workers' health, encompassing both physical and mental dimensions. The expected impact is ambiguous: while workers may benefit from improved working conditions and lower workplace injury rates, they may also bear the negative effects of displacement risk and increased work intensity. Combining French individual healthcare data with firm-level data from customs and administrative sources, we identify workers exposed to firm-level technological change. We first describe the characteristics of firms initiating technological shifts. We then provide preliminary insights into their impact on workers’ health outcomes. Finally, we discuss the methodology and the next steps to identify the causal effect of technological change in the firm on workers’ well-being.