General opinion is that a side job is one that supports the main income of an individual, often times perceived as something that brings little money to add to what you make from your day job. If Mr X earns better from a side job when compared to the income from his career option, does the side job still qualify to be called a side job?
First, let's define both terms to understand them much better. Based on my knowledge, the main job is the primary job a person has which he spends most of his time in a day or week. The main job eats much of someone's time in order for the worker to fulfill his duties, tasks, and responsibilities in that certain job title he currently has. Meanwhile, side jobs or also known as side hustles are the second job or even third job aside from the main job. These side jobs do not necessarily take most of someone's time because it is just a work apart from the main.
Although despite this, a side job can generate more income than the main job. Side jobs are taken by someone to either fulfill their passion alongside their chosen career or to have additional income for their expenses. Side jobs are still called side jobs despite how it is earning bigger than the main job. Because for me, the longevity of working hours is what really determines if the job you have is your main job or just a side hustle. Let me give you an example. Here in our country, a teacher has a salary monthly worth of $400. This job takes up to 8 hours a day of a teacher's time. If the teacher would have a side hustle in tutoring or becoming a virtual assistant for 5 hours a day that could give him a monthly compensation of $600, the side hustle still remains a side hustle because he just spends a shorter time compared to the main. But the catch is, he earns bigger in it.
I believe having a side job is a wise decision most especially now that it's really hard to become financially stable with just one source of income. It's a great way to support yourself, your family, and to secure your future. But just make sure to still prioritize your health first above all because no matter how much money you'll save from having multiple side jobs, it'll be lost once you get sick due to stress and overfatigue.