The absence of ergonomics in organizations can lead to significant economic costs and legal penalties. This study presents a mathematical model to estimate the Economic Cost of the Absence of Ergonomics (CAE) and the financial impact of regulatory non-compliance, based on Brazilian Regulatory Standards NR 17 and NR 28. The model incorporates the severity of nonconformities (Gᵢ), company size (E), and an interpolation between the minimum and maximum penalty values defined by law. Applied to real ergonomic assessment reports, the model enables calculation of the Nonconformity Index (ID) and the Total Estimated Penalty (PT), providing objective parameters on organizational exposure due to lack of ergonomic compliance. The results indicate that proactive ergonomics management helps reduce financial impacts and promotes organizational maturity. The proposed tool supports managerial decision-making based on normative and quantitative criteria.