Organization in the workplace is most effective when you have a strong relationship with your fellow workers. Rule number one of organizing; keep these conversations between committed workers. If the boss catches on, they can stifle a union campaign before it gains enough support to get off the ground.
Identifying the issues in your workplace that your coworkers can sympathize with is a great way to start. Are wages stagnant and lower than they should be? Does your boss ignore or deny requests that are crucial to doing your job? When enough workers organize around the same issues in the workplace, the boss has to start listening. It won’t be easy, but it can be done effectively by any 2 or more members of the working class coming together to improve the conditions of their job.