I served in Kaduna, where there's no association of Barbers or other common enterprise.

Back in the South-West. Now, there's association for Mobile Phone repairer. What I hate most is the weekly meetings. Now my friends are pestering me to come.

Is there a legal backing that makes it compulsory or not?

Do states in the South-West have laws backing a registered profession to have association/meetings and be able to enforce anyone not complying?
To be precise, do Oyo State have?

Been practicing the profession for more than 10 years, I love it this way, don't judge with sentiments.