The wage system is an important aspect of labour relations that directly affects workers’ fairness and welfare. From an Islamic law perspective, wages are regulated through the ijârah ‘ala al-‘amâl contract, which emphasises clarity, fairness, and the protection of the rights and obligations of the parties. However, in practice, there are still differences in treatment and potential injustices in the wage system, particularly between daily and monthly workers. The main issue in this study lies in the mechanism of wage distribution for workers at the Tera Bottled Water Factory in Seulimeum District and the extent to which it complies with the principle of fairness in the ijârah ‘ala al-‘amâl contract. The research method is descriptive, analytical, and qualitative, with an empirical sociological approach, and is conducted through a literature review, in-depth interviews with workers, and field observations. The results show that daily workers do not receive wages when they do not work due to factory operational disruptions not caused by their negligence. In contrast, monthly workers still receive their basic wages. This practice has the potential to burden daily workers with operational risks and does not fully reflect the principle of fairness in the ijârah ‘ala al-‘amâl contract. Therefore, it is necessary to review the wage policy to make it more equitable and in line with Sharia values in employment relationships.