Allergies are the result of a hypersensitive immune system. The allergic immune system misidentifies an otherwise innocuous substance as harmful, and then attacks the substance with a ferocity far greater than required.
Laying off an employee is different from firing an employee. Firing means letting a worker go for any reason, whereas a layoff refers to an employment termination based on economics, usually involving more than one worker.
Use rationale in a sentence. Emily was devastated to hear she'd be losing her job, and her employer's rationale for doing so -- cost-cutting and streamlining -- rang hollow in her ears. The company provided its employees with a rationale about laying off twenty percent of the workforce by presenting a financial statement.