One of the reasons why taking Jewish holidays off from with is awkward is this…
When you’re Jewish in a goyim-dominated workplace any and all obvious Jews suddenly become part of a silent faction that is maybe not recognized and maybe not emphasized but many people just think you’re in cahoots with one another. People get the idea that you and the other yahood are all in step with each other - that you should do some things the same - and your actions become representative of the Jewish community.
This becomes awkward when one Jew wants to get the High Holidays off, one Jew wants to take Rosh Hashanah off but not Yom Kippur, one Jew is going to work the holidays, and one Jew is so far off the derech that she goes out for lobster bakes with the rest of the staff and couldn’t tell you when the high holidays even are.
SO, the most observant one looks crazy (or full of shit) and all of the non-Jews are left scratching their heads because they can’t figure out what a Jew is supposed to do if they have four “different” Jews on their hands.