Occupational or work related diseases are diseases that are caused or worsened by materials in the working place, to which an employee is exposed.
The impact of these diseases is underestimated because of lack of information. Occupational diseases can manifest directly when the patient goes to work ("Monday morning fever"), or they can affect retired people, whose condition is due to their previous exposure at work.
The substances to which someone can be exposed can be organic like flours, cotton, wheat, animal and bird feces or inorganic like minerals (asbestos), heavy metals (cobalt), composed chemical compounds, dyes, ect.

These diseases include:

• Asthma
• Chronic bronchitis
• Burns because of inhalation of irritating substances
• Interstitial Lung Diseases- Pneumoconiosis
• Lung Malignancies
• Mesothelioma (pleura malignancy)