I know of many HR exec's in the faith. Not all of them have any involvement with religious customs, and employee engagement doesn't have to be about that. Canada likes to endorse a neutral attitude towards diversity and one with acceptance of all cultures, race, and shall I say sexual orientation. That being said, it doesn't mean that you have to involve yourself in all of these differences, but you have to come accross as if you accept anyone regardless of their differences. You are also to be respected for your views as well. In other words, if you were a Mormon, and didn't drink coffee, and coffee was served in a morning meeting, you have the right to decline drinking coffee, but you may want to take another beverage, instead. Many JW's execs have mastered their dealings in workforce around these differences.
Toasting is also a rough experience when you are attending a function...99 % of the world feel that this is alright. But, today, you can dismiss yourself from this custom in being open about your beliefs, and this should be accepted. It doesn't have to be a big drama. It's feels strange to isolate yourself from this participation but doing so will make many respect you for being loyal to who you really are.
A good HR exec doesn't give into peer pressure, gossip, slander, and fear of men. You will go very far if you prove yourself in this way.