Application and adherence to labor laws may differ worldwide, but labor laws continue to expand into new countries such as the Labour Law of the People's Republic of China and the Indian labour law. Trade union organizing often starts with workers who are untrained or unaware of labour law. Due to the changing global and multinational employment environment and labor relations/employment laws, the modern labor movement turns more and more to professional guidance. Internationally, laws differ in how a bargaining unit is defined for workers with job descriptions involving supervision or management. Because the operative word is “law”, trade unions and workplaces may retain legal counsel to navigate the complexities of local and/or international labor laws in order to avoid unfair labor practice charges.