Burnout (noun)

1. A state of emotional and physical exhaustion caused by prolonged stress or overwork.
2. The point at which an engine stops working because of an overheated or worn-out component.
3. A state of emotional and physical exhaustion caused by prolonged stress or overwork.

Origin:

From the verb burn out, which came into use in the early 20th century. the verb comes from the noun burn, which means a wound or injury caused by heat, chemicals, electricity, or radiation.

Examples:

1. The engineer was suffering from burnout after months of working on the project.
2. The burnout caused by the pressure of the job made it impossible for the employee to continue working.
3. The burnout of the engine was caused by lack of oil.
4. This job is so stressful that it's a wonder anyone lasts long without experiencing burnout.
5. The company was seeing a lot of burnout among its employees because of the long hours and high expectations.