When someone tells you to get real, they want you to get a
reality check and to stop behaving as though you're living in a fantasy world.
Could apply to pretty much anyone or anything (as in a company or organisation) that mentally is not living in reality.
Examples can include companies paying their employees minimum wage while demanding
preformance and duties etc that someone willing to preform them is worth at least
twise that. On the other side of the coin, it can also include employees demanding pay that is far in excess of what the company can realistically afford to pay them.
Basically anyone or anything that expects something that just isn't realistic, saying 'get real' means to tell them to stop being unrealistic.