Can we second staff from Türkiye?

Yes. Short-term secondments turn on the certificate of posting (T/A 1) issued under the Türkiye–Germany social security agreement, while permanent employment brings German employment law and residence and work permits into play. We structure the secondment model around duration and cost. The coordination rests on that bilateral agreement, not on the EU rules: with the certificate in hand the employee stays inside the Turkish SGK system for a limited period, and contributions are not paid twice. Planning the visa and work-permit leg from the outset is what keeps the secondment running without a break.