So please provide the stats from "first-generation" immigrants.
They are public right?
Right?
By law their residency was on the condition of employment or self-employment, so close to 100% by definition. Nowadays they are either naturalized (so no immigrants anymore) or pensioned, or returned back home after their work life ended, or already died. Keep in mind that this immigration wave was 40 to 50 years ago.
And yes, all of this is easily findable public data.
"By law their residency was on the condition of employment or self-employment, so close to 100% by definition"
That is a very strong "stimulus" to keep people working and being integrated. Do we have the same today?
"And yes, all of this is easily findable public data."
Please may you provide the link with first-generation employment status?
Of course refugees are vastly more likely to be unemployed - 2/3 came from the Syrian civil war and there's no guarantee of entering the country with in-demand skills or any understanding of the language.
Germany has 1.24 million refugees, but it has ~14 million first-generation immigrants including over a million Turks. People who immigrated for work and had to apply for visas are going to have completely different employment outcomes than a surge of war refugees.