Let me give you an example: you're gay and your employer has a thing about gay people. They will not ask you outright 'are you gay?' because that, while legal might result in an anti discrimination suit upon rejection of the candidate which they could very well lose.
Lots of other situations and questions like that which are strictly speaking none of the employer's business. When given the option between telling the truth, evading the question, enforcing your boundaries or lying the only one that might result in you getting the job (assuming you need a job and wouldn't mind working for a bigot because a paycheck is better than no paycheck) I'd be fine with you lying. That is still problematic, but you don't have any moral responsibility towards your employer if they transgress themselves.
The same goes for questions about unionizing, wanting children, having chronic diseases and so on.
Lots of other situations and questions like that which are strictly speaking none of the employer's business. When given the option between telling the truth, evading the question, enforcing your boundaries or lying the only one that might result in you getting the job (assuming you need a job and wouldn't mind working for a bigot because a paycheck is better than no paycheck) I'd be fine with you lying. That is still problematic, but you don't have any moral responsibility towards your employer if they transgress themselves.
The same goes for questions about unionizing, wanting children, having chronic diseases and so on.