A careers page or an information-session deck is what a reader uses to decide whether this is somewhere they would work. The illustrations in it can narrow that audience without anyone intending it. This is not a rights question but a selection one.

Look at who appears, across the whole document
Check whether the ages and genders shown are skewed when taken as a whole. Image by image it passes unnoticed; read straight through and you often find only one group is ever depicted. Readers are looking, without thinking about it, for someone like themselves.
You do not have to cover every attribute. Reading through once to check is enough.
Watch how roles are drawn
Explaining and listening, directing and doing — where several figures appear, roles can look fixed. When the pairing of role and attribute is consistent across a whole document, it is read as a message whether or not one was intended.
Dress the figures like the job
Everyone in a suit is a lie if the office is not like that. Choose casual assets for a casual workplace, something close to the real thing where there is a uniform. Not leaving new joiners feeling misled is a practical benefit, not just an honest one.

Do not leave out the remote round
If your process includes online interviews, you need assets for that too. A document built entirely from in-person scenes does not match the process it describes. What candidates worry about first is usually the format they have had least practice with.
An interview through a screen raises questions an in-person one does not — background, lighting, where to look. If the text covers those, the pictures should be of that setting.
Use photographs and illustrations for different jobs
If you can show real employees in photographs, that carries further. Illustration suits the places where you want to convey a situation without pointing at a particular individual: the shape of the interview, the stages of selection, how people work.
Where photographs and illustrations share a page, keeping the illustration in a supporting position settles better.
Keep expressions restrained
Overly bright expressions read as staged. A calmer face makes the surrounding text easier to believe.
About Visual Hub assets
We have both in-person interviews across a desk and online interviews taken from home. Ages and dress differ from asset to asset, so lay out the whole document and check before choosing. Commercial use is free and no credit line is required.