California and Federal laws prohibit which of the following?

The prohibition against employers from forcing an employee to join a union is a key aspect of labor law under both California and federal regulations. This directive is rooted in the principle of free choice, ensuring that employees can make individual decisions regarding union membership without coercion or intimidation from their employers. The National Labor Relations Act (NLRA) specifically protects employees' rights to engage in collective bargaining and to choose whether to join a union. This safeguard is crucial in maintaining fair labor practices and protecting the rights of employees.

In contrast, the other options do not accurately reflect the provisions of California and federal laws. Employees have the right to unionize, employers can deduct union dues from salaries under certain conditions, and employees are allowed to discuss union activities freely. Collectively, these laws aim to protect both employees and employers, creating a balanced environment for labor relations.