When I interviewed at my current job they noticed my fork bracelet in the interview, but didn't ask about it until later. Once I got the job it was brought up again and I explained it to my boss. Over the next few weeks I had opportunities to explain to them the view that animals are people, and that we should leave them off our plates. I don't think they immediately agreed, but they were receptive of what I said. From the start I was very clear that this is an important issue to me and I've remained outspoken about it.
A few months ago for someone else's birthday, my boss brought a vegan cupcake especially for me so I could join in. I appreciated this gesture. They've consistently gone out of their way to make sure I feel included.
Our department has a tradition of going all out when someone returns from vacation or has a birthday. For instance, my boss drinks a lot of seltzer water, so as a gag we stacked them into a huge tower on her desk for her birthday. Earlier this month it was my birthday, and my boss convinced our department to go vegan for a day. She brought a tray of muffins for breakfast, we all went to HipCityVeg for lunch, then we had vegan cupcakes when we returned. It was an overwhelming success. Everyone liked the food and enjoyed this. Most of them even said they'd stick to it through dinner after work.
I consider myself very lucky. I have a great work environment and I really like these people. I'm glad I've taken the pledge and that I've become so outspoken about this otherwise it may not have happened. Of course a big part of it is that my boss is awesome, but there are mutual forces at play here. Not everyone will have this sort of win, but we owe it to ourselves and to non-humans to try.