Abooga, you're just beating a dead horse, fella, aren't you?
Your arguments have more holes in them than a wheel of Swiss Cheese.
Let's just tackle this a wee bit at a time, because IMHO, you've just got to be able to see the flaws in your own logic and statements. You've got to! I refuse to believe that anyone thinks as muddy as you're presenting, here.
Sole Topic: Secretary With Perks
It wouldn't be "Position Available: Secretary With Perks". It would be "Position Available: Secretary Who Puts Out for Better Pay". (And I think we've already identified a name for that, haven't we?)
Now, just assuming you were using "with perks" as a euphemism (wink wink nudge nudge)... It would never get past about four hundred local laws and so it's a total illusion.
BTW, the job "with perks" is called "Boss With Perks"... You get to bang your secretary ... it's a perk many of us claim to have but it's usually not true.
But, again just for argument's sake, let's concede you your silly hypothetical.... Let's just say there was such a job description. What would qualify a secretary for such a job? Big hooters? Nice butt? Ties cherry stems without using her digital extremities? Or, could any qualified "clerical" or "secretarial" help apply. You see where this is heading? You're looking at breaking another law or twenty.
Or would you like to meet Ramona Stinkypits, the 189 kg clerk who wishes to be your "secretary with perks". As her former boss, says, "Heck, she's got everything a guy wants... muscles, a tatoo of a cobra, and a moustache". She can apply under Abooga's EOE plan?
And let's say you get around that part, too.
So now.......
Such a position exists.
And.. You are allowed to somehow discriminate so that only persons who are appealing to your sexual urges are allowed to apply.
You then delve into said hypothetical boss somehow evolving the inherent right to force Serena Sweethang into taking such a job. Just so the boss could have boinking rights. I think you just violated another two dozen laws.
It's rather basic. No one can order someone to do something that is against their will, in business. One has the power of the legs. Walk out! There's also the issue of bosses forcing anyone to apply for a job or accept a job that said person doesn't want and is not qualified for. "But your honor!!! I mean, look at her. You just gotta let me toss her up on the desk a couple of times a week. Yeah, I know she's married, the thought of me repulses her, and she's a devout muslim and thus will be stoned to death, but heh... look at that tush!"
Yes, you can fall back on that trite old "forced by poverty" nonsense. But as you've been shown a dozen times, anyone could make their claim about their job. Burger flippers, parking lot attendants, actuaries, programmers... all of em think they should be doing something else for more money, but they have this unfortunate addiction to food. (Meh, I'm thinking of suing my company. I know a couple a hundred G is okay money, but I really feel I have a calling to be a potentate of a small island kingdom somewhere. I'm merely being exploited by my company into performing tasks that are beneath me and repulsive to my beliefs because of my poverty (e.g. inability to put away enough to pay cash for the condo in Koh Samui).
Now if there's anything we haven't covered, you let me know. I'll work with you on this. Everyone else seems exasperated, but I just tuned in so I'm fresh as a daisy (so to speak).