*shrugs* before changing my name (due to lack of funds) I just explained to my employer what was going on. My employer respected me, and my name badge had "Natalie" on it. Just for legal stuff was my old name on stuff. I then changed it a couple of months after working, which changed without any issue.
--natalie
PS my resume has my female name on it, but the actual legal stuff, I had to put what was legally my name. For my last couple of jobs, I of course put my new legal name, but I also marked off the F on my applications -- although, technically I'm supposed to put M. Yet, my healthcare card says F, but drivers ID and birth certificate say M, sadly. Here, you can change your healthcare card with a doctors note that you're trans; but you have to wait until SRS to change the rest into an F (yet, if you're sneaky, you can lie and get your drivers gender turned into an F... I know a few who've done this, yet, most places are aware now that they can't change it without the SRS papers, cause the gov wasn't liking it, yet I don't know anyone who's been charged for getting their gender changed, although technically, it's fraud. *shrugs*)
The ironic thing is that with my legal government ID, I'm both genders, since my healthcare card is legal government ID. I *think* my SIN card (SSN in the states) has me down as Female as well -- when I went into the office, they had no clue what gender to put me at, and I believe they actually changed it to an F, yet the card has no actual gender marker on it. Just a set of numbers, and my name. The first number is where it was issued, and the rest is random based on an arthrogram.
Anyway, you may just have to tell your employer what is up. I know that it's not easy, but if your employer is decent, your employer will be glad that you are honest. Rather than them doing a check and finding out later that there's a discrepancy with your name and your legal name, and getting angry with you or thinking that you have a stolen identity and calling the police, etc.
--natalie