أنجليزي إلى عربي الفن/الأدب عام \ محادثات \ تحيات \ خطابات

In the sense of welcoming new members to a labor union, to be used on an Union postcard among many other languages so brevity is important; thank you

If there is a difference between how it would be said specifically in Morocco, Egypt and Algeria, I would be most grateful for all 3 versions