People have many reasons why they might want to move from one place to another. These reasons may be economical (unemployment, labour shortages, level of wages), social (lack of various services, security, and safety), political or environmental. For migration to take place, there are usually push factors and pull factors at work. Push factors are the reasons that determine someone to decide to move (no jobs available). Pull factors, on the other hand, are the expectations that attract people to the new place (job offers, having family close, desire for travel, etc.).