IntroductionNoted the importance of the human element of any organization, whether operating locally or internationally, becoming the human element and knowledge and qualification of one of the companies have been assessed only the financial aspects, the human dimension element is able to take advantage of the various other optimization elements. While recognizing the importance of the human element we cannot ignore the impact of the environment on this element and we can say that the environment plays an important role in the success of a Manager in carrying out his activities and duties. Hence the importance of attention to managers, a person who succeeds in managing the organization in one country fails in managing a similar organization in another country, due to different environmental effects. Sources of human resources:1. Citizens of the home countryMany international companies prefer to hire key positions in their foreign units, managers, technicians and experts from the home country. This has many characteristics including:• The fact that these experienced workers from the motherland who work with and know well how to work at home understand this knowledge transferred to employees abroad.• Learning from abroad many things such as the culture of the people in the foreign country and the functioning of global markets, the nature of consumers and how to accept them for the company's products.• Acquire the knowledge and skills available in the foreign country and host in the motherland.• To ensure the loyalty of these workers, especially in a crisis situation between international country and host country or between home country and host country. The disadvantages of working from home country selection are:• The additional cost caused by poor...... middle of paper... ...sis, environment, regulation- Polarization- Training- Salaries and wages- Evaluation of performance- Rehabilitation experts to return homeConclusion The above highlights the complexity of human resource management on those local variables that are not found at the local level. There is a process of comparison and selection between alternative sources of human resources, international human resource management faces various challenges in a country of expatriation, members of the property management of some recipes which help them to do business in that country after which they adapt and they make do with all the new environmental variables. It is the exercise of public human resources management functions to analyze, recruit and train personnel, evaluate their performance and determine their remuneration and return to their country of origin after missions.