You can work doing whatever you want (as long as you fulfil the conditions of a possible professional code), and you can earn as much as you want.
In practice, however, certain rules and restrictions must be observed.
In addition, there is always the possibility that a company will fail.
If you have another source of income, this setback is easier to cope with.
You remain in an employment relationship, but still start your own business on the side.
In summary, these are the benefits offered by starting out your self-employed business on a part-time basis: Maybe you’re unsure whether or not your business idea is solid. You still have the opportunity to make changes to the business model if necessary.
Here’s a breakdown of the ways your side gig could negatively affect your main job: Many employers include a non-compete clause in their employee contracts.
This is to ensure that you do not take the information, skills and contacts you acquire at your main job elsewhere (either to a new employer, or to a self-employed side job).
Otherwise, the same rules apply to part-time self-employed workers as to other self-employed: How you set yourself up for independent work depends strongly on what you want to do.
Maybe you have an exciting business idea or you want to turn a hobby into a profession.