Quote from: defective snowflake on May 02, 2014, 09:03:59 AMnot to mention, if they ask for any previous names used and you fail to enter them, I imagine that can be grounds for dismissal if they find out otherwise with a lot of employers depending on their policies.
Guidance from past cases (that dealt with immigrants who changed their names to assimilate and avoid discrimination, but the same principle should apply to the trans community) says that employers need to know former or other names only to enable them to properly check your credentials and background. If your employer has no practical reason* to know your former name, putting down something like "none that relevant records are under" is an acceptable alternative response (if you want to CYA in case they find an excuse down the road to fire you). On the other hand, if they need to know your former name in order to check your work or educational history (for an event that occurred before you changed your name, and you haven't or they won't update your records) you'll probably have to out yourself sooner or later.
*Practical reasons include needing to verify your employment history or a degree/diploma/educational certificate/license that is under the name, to contact references that only know you by your former name, or if you have ANY criminal history under said name (this includes aliases that your history may be under). Note that if you leave off past employment for the sake of hoping not to out yourself that could be construed as misrepresenting your work history (since people commonly do that to hide employment that they left under less-than-favorable terms), and if you fail to give out all names/aliases your criminal history is under you may be accused of trying to cover your history up. (If the criminal history check is the only issue, another "alternative response" idea is to put down that you'll disclose the sensitive information only to the company or agency running the check.)
I should note that in cases like an adoption or the name was otherwise changed before said person was of working age (which may apply to some of our child or teen transitioners), it's generally held (except with security clearance type jobs, of which a lot I said in this post may not apply) that the name does not need to be brought up -
at this link it's item #6 discussed (but like I said if you feel the need to CYA you can use a response like I suggested).