ANSWER:

NO.  You pay commission only to your agent.

Commission rate varies between agencies and your union status. Rates can range from 10% to 20% so please consult your agent(s) for their exact rate.

RELATED TOPIC:
Agents may charge an additional fee for their services. This fee can be as high as $200.00 per year so do check around for the right agent that you are comfortable in working with and who can find work for you.