YOU SAID:

I am not going back to work until the first day of work

INTO JAPANESE

仕事の初日まで仕事に戻らない

BACK INTO ENGLISH

Don't go back to work until the first day of work

INTO JAPANESE

仕事の初日まで仕事に戻らないでください

BACK INTO ENGLISH

Don't go back to work until the first day of work