Stuck: And buying Tzorchei Shabbos isn’t necessary? And who says? Negiyah Derech Chibah is Yeihareg V’al Ya’avor. We wouldn’t be Mattir that for any circumstance, let alone the “necessity” of going to this particular job (and the Tzitz Eliezer was talking about any bus in Eretz Yisrael; as far as I recall he doesn’t specifically mention it being for work). If it’s not Assur then that means it’s Muttar in this case. If there’s Mamash no Derech Chibah V’hana’ah then it would appear to be Muttar.
