Becoming an associate in a firm
My son has been working with a company in a skills-based capacity for several years. He is self employed and has a contract with the company. His work is highly appreciated. He's just been approached to become an associate, but they yet have to meet to discuss. The company has about a dozen associates.
He's digging up the internet, but knowing how sometimes a question here can yield very useful information in a few lines, I would like to ask the following.
1. What are the most important things to ask the company about?
2. What are the potential risks or drawbacks?