"Regarding my working visa which is currently being processed."
"Regarding my work visa application"
- "Regarding my working visa which is currently being processed." 「今申請中の就労ビザについて
”regarding ~" 「〜について」
"my working visa" 「私の就労ビザ」"my work visa" も言えます。
"currently" 「今」
"being processed" 「申請中」
- "Regarding my work visa application" 「就労ビザの申請について」も簡単に言えます。