Josh, You never worked in a 24/7 business that accommodated frum Yidden? You never heard of frum Computer tech’s, that work for a 24/7 data operations center? A frum EMT that works for a 24/7 city EMS, that allows Shabbos off?
They all can, and indeed legally must reasonably accommodate a religious Sabbath observer. Whether it is allowing an Air traffic controller off on Shabbos or allowing a Network Administrator for the 24/7 data center off on Shabbos.