Answer:
a manager paying an employee to spy on union members.
Step-by-step explanation:
Union busting refers to the actions taken by employer in order to disrupt the labor Union process.
One of the most common tactics that employers often used is by putting a 'spy' inside the union. This spy is usually being paid to obtain various information regarding union activities. Things such as their negotiation plan, when they will conduct strikes, the key members of the union, etc. By knowing this information, the employers could take a preemptive measure to prevent the damage that can be caused by those union activities.