Kickback:
A kickback is an illegal payment intended as compensation for preferential treatment or any other type of improper services received. The kickback may be money, a gift, credit, or anything of value. Paying or receiving kickbacks is a corrupt practice that interferes with an employee’s or a public official’s ability to make unbiased decisions. Kickbacks are often referred to as a type of bribery. [Investopedia]
Used by me here. I receive annual training from my employer that emphasizes kickbacks will result in termination. Since I’m not in Sales, it doesn’t really apply, but the training is still mandatory.