- Doing melacha for pikuach nefesh is not considered chillul Shabbos.(BeH “m’tzumtzemmes”)
- If you are a Jewish soldier being forced to get a job done but the Army is not demanding to do it on Saturday, you are required to do the job during the week so that you do not come to chillul Shabbos. (ShaH 9)
- Twisting threads into a string is the melacha of Toveh. (MB*)