YOU SAID:
I am excited to start work
INTO JAPANESE
私は仕事を始めることに興奮しています
BACK INTO ENGLISH
I'm excited to start work
INTO JAPANESE
仕事を始めるのが楽しみです
BACK INTO ENGLISH
I'm looking forward to starting work
INTO JAPANESE
仕事を始めるのが楽しみです
BACK INTO ENGLISH
I'm looking forward to starting work
That didn't even make that much sense in English.