[flapperleenie]

Under German law you can have part-time self-employed work alongside your normal job.

[k__]

And in fact, many people have.

They need to give you the money somehow, if they don't want to employ you, that is (as far as I know) the only way.

[tobilg]

You're right! But then I'd really wish they'd refine the phrasing of the rule section.

In fact, if you have a full-time employer, this employer will in most work contracts reserve the "right" to your full work capacity, and will insist on a sign-off for other jobs besides the "full-time" one.