Answer:
The night job has a compensating wage differential of $3 per hour.
Explanation:
All work carried out in abnormal conditions, that is, in a different schedule from the one usually regulated by labor laws, or a work in which there are components that make it unhealthy for the worker, among others, has a salary compensation that makes be paid more than those jobs that do not have the aforementioned characteristics.
In the example, work performed during daytime has a wage of $ 22 per hour, while work performed during night hours has a wage of $ 25 per hour. Thus, it is clearly seen how in the case there is a compensating wage differential as a consequence of said special work circumstance.