I think both parties are possibly at fault to a degree, more so the JW. For one thing, if the JW was hired 12/14/2011, that's in the middle of holiday season. That said, he should have relayed to his potential employer that he was a JW from the get-go as it would affect his job duties. Every job interview I've ever been on there was detailed discussion about what was to be expected of me if hired. If decorating cakes was part of this baker's duties and there was going to be an issue, he was obligated to tell his potential employer what he could and could not do. I'd love to know if this JW was a born-in too considering all the material the WT has produced throughout the years encouraging JW parents to speak with teachers about the "special needs" of their children and to do so WELL BEFORE holidays or other situations come up. I was offered a job to work at a plant that manufactured all sorts of things, some of which were for the military related. During the tour of the place, my potential employer couldn't even take me throughout the entire facility because some of the work was classified. After he made the offer, I told him that I couldn't work on certain projects due to my JW beliefs, and he was ok with that as they had plenty of other projects going on other than military related.
That said, the link states that the JW was transferred on 1/8/2012, and then fired 1/21/2012. I'd love to know what transpired during those two weeks. Reflecting on my behavior at an old job, in hindsight I would have conducted myself differently. I was completely unyielding in certain situations related to being a JW and came off like an arrogant pious prick. One situation, pizza was ordered by segment of our department for the whole department, and my boss approached me to let me know that it wasn't related to Christmas. But arrogant pious asshole me allowed the holy spirit to see it for what it really was. Yep, Christmas pizza disguised as a generalized appreciation lunch!! Not only did I decline to eat any of the pizza, I went down the street and got some hot dogs and also had the nerve to come back to work and eat the hot dogs at my desk like I was rubbing it in their faces letting them know just how righteous I am. Little things like can make you look like the biggest jerk. I got sick off those same hot dogs later too, and deserved every bit of stomach woes from that situation.
That's why I wonder what happened during those two weeks. The JW probably conducted himself like a self righteous prick, probably badmouthing the boss and politicking despite having only been working there a month and a half. It's possible the boss could have been more yielding, but maybe he was when he transferred the JW. Who knows.