TBH, IF transgender people are less likely to get employment, I think the reason is more likely to be that the employer can't provide enough toilet facilities to keep everyone that works for them feeding safe, than anything else.
Or perhaps they worry that the employee will spend all their work time being "trans" and making everyone else feel uncomfortable about pronouns and micro aggressions etc, rather than doing their job. Because rightly or wrongly, that is the impression that so transpeople many give online.