Hear me out, Jon gorging on statements, going into the trauma equivalent of a food coma. Being stuffed full and just passing out in the archives, because he feels too heavy with secondhand trauma to even walk. This being a regular occurrence and Jon being taken advantage of in that state.
Elias gently waking him just enough to lead him up to his office where he leaves Jon under his desk. Jon barely conscious on a pillow specifically for him, leaning into Elias’s leg as Elias settles his collar around his neck. Elias stroking Jon’s hair before carefully feeding him his cock, Jon just holding it in his mouth half-asleep but so comfortable. Of course after Elias finishes his paperwork for the day he fucks Jon on his desk, Jon blissed out of his mind. Elias feeds him another statement as he does so, and Jon whimpers at how full he is.
Season four, Peter coming down to see the Archivist unconscious on his stupid little cot. He’s far rougher with him than Elias was during these times. Jon is too full to fight, too tired to do anything other than take it, making sad little whimpering noises. It’s not soft and gentle like he likes it after a large fear meal, but he can’t get any words out past the sheer exhaustion.
Tim fucking his boss as a bit of payback for the stalking. Wanting to be rough at first but Jon is just so small and needy. So instead Tim teases him mercilessly, not letting him cum, needling him about his lack of self control. After all Jon can’t keep from gorging on as much secondhand trauma as he possibly can, if he can’t show a little moderation why should he get anything more. Or the opposite, where he doesn’t stop until he is physically incapable of wringing another orgasm out of Jon. Who is just a mess of bruises and bite-marks, which Tim won’t let him cover later.
Just people taking advantage of Jon when he’s too out of it to say no.