In recent years, the study of organizational and employee happiness has become a prevalent and increasingly important research topic in the field of management science. At present, however, there are few studies that aim to examine the happiness of employees working in Industry 4.0 environments. Against this background, and in order to extend scientific progress on the topic, this paper presents a microanalysis of the level of employee happiness of those actively employed in the Spanish industrial sector. A correlational study was carried out using primary data from the barometer of the Center for Sociological Research (CIS). From this data, an ANOVA analysis was completed with results showing that the average rate of happiness for employees is quite high. Observations also revealed that individual employee happiness is directly linked to personal income and not from factors surrounding homelife.