Making effective investment decisions requires adequate financial knowledge and awareness. This study examines the relationship between financial literacy and investment decisions among women employees working in healthcare product manufacturing companies in Thiruvananthapuram. The research was conducted among women workers from ten selected companies, with a final sample of 412 respondents. Data were collected using a structured questionnaire and analyzed using simple percentage analysis, mean, standard deviation, coefficient of variation, t-test, One-way ANOVA, and regression analysis to determine the influence of various dimensions of financial literacy on investment behaviour. The findings reveal that most respondents possess a moderate level of financial literacy, demonstrating good awareness of investment avenues and basic financial concepts but limited understanding of analytical skills, risk-return relationships, and economic policies. The results show that age and educational qualification significantly influence financial literacy, while investment experience and annual investment positively affect investment decisions. Regression analysis confirms that risk-return awareness, financial behaviour, product knowledge, and digital literacy have a substantial impact on investment decision-making. The study concludes that financial literacy plays a vital role in shaping women’s investment attitudes and decisions. Women with higher financial literacy tend to make more confident, informed, and independent investment choices. The study suggests that enhancing financial education and digital financial training can empower female industrial workers, promote financial inclusion, and contribute to their long-term economic security and financial well-being.