The route of entry that leads to the most work-related sickness is inhalation (breathing). This is because many harmful substances in the workplace, such as gases, vapors, dust, and fumes, become airborne and are easily inhaled. Once inhaled, these substances can cause immediate or chronic damage to the respiratory system and may also enter the bloodstream, causing systemic health effects. Inhalation is the most common way workplace chemicals enter the body compared to other routes like skin absorption, ingestion, or injection.

Explanation of Routes of Entry

• Inhalation : Most common and dangerous route, exposing workers to airborne contaminants that can cause respiratory illnesses, neurological damage, or cancer.
• Skin Absorption : Chemicals that penetrate the skin can cause localized irritation or systemic effects if they enter the bloodstream.
• Ingestion : Less common but occurs due to poor hygiene, involving swallowing contaminated substances.
• Injection : Rare but serious, occurring from puncture wounds introducing chemicals directly into the bloodstream.

Prevention

• Use respiratory protection and ensure adequate ventilation.
• Practice good hygiene, including regular hand washing.
• Use protective clothing and gloves to prevent skin contact.

In summary, inhalation is the predominant route of entry leading to the majority of work-related illnesses due to the ease with which airborne contaminants can enter the body and cause both immediate and long-term health effects.