My coworkers know Im trans since I only started transitioning and hadnt had my male name yet (literally the only thing giving me away...besides my parents) . I work at a corporate company that was all for equality in race, age, class, gender etc. so legally by company standards no one could discriminate me even if they wanted to.
Ive never had an actual conversation about my transness, I think word or knowledge got around in the background that I was female because of seeing my legal name. One of my coworkers asked me which pronoun I go by. My other coworker stumbled sheepishly on using the pronoun sir, asking me if that was alright, and unsure of if he was offending me or not, and just confused about people like me, he told me he just sees me as a friend and doesnt think about if Im a guy or girl. One of my other coworkers who is probably religious always stumbles on saying sir but then awkwardly changes it to my name (gender neutral nickname) right afterwards because apparently she doesnt like calling me sir.
The only time when my transness came into play was when my parents harassed me at work, some of my coworkers were sympathetic to my plight, one of them asked me what I was, and I just said Im [my name], she nodded understandingly saying "You're just you".
Overall, the people, even particularly the males at my workplace, just treat me like a person who happens to be a guy. Even if a few of them might be confused, and that's fine by me. I couldnt ask for better treatment.
The guys who are customers who dont know me just use male related terms and pronouns to refer to me, using male mannerisms and such when communicating with me, Im pretty much just another guy.