History of Vietnam since 1945 unstable as no government could keep power for long. There were more coups, often more than one every year. The Communist-run Viet Cong expanded their operation and scored some significant military victories during this period. In 1965, US President Lyndon Johnson sent troops to South Vietnam to secure the country and started to bomb North Vietnam, assuming that if South Vietnam fell to the Communists, other countries in the Southeast Asia would follow, in accordance with the domino theory. Other US allies, such as Australia, New Zealand, South Korea, Thailand, the Philippines, and Taiwan also sent troops to South Vietnam.
Dispatched labor employment agencies were not confined to placement services and job placement anymore but the employer could provide laborers to third parties. Second, urged the international society members to attach importance on the flexibility of labor market. Because of the legislation of ILO Convention 181, it spurred big progress in the development of labor dispatching. Regularly Employed：Dispatched work agencies send their regular employed workers to client enterprises to provide labor. The labor contracts between dispatched workers and dispatched work agencies are irregular labor contracts, thus, whether the period of dispatched contracts expire or not, it will not influence the labor relation