Friction are situation when workers and employers do not want changes because changes brings higher costs. These are the consequences resulting when is too expensive to employ or dismiss workers for company when is too expensive to change employers for workers or looking for new work places. When all workers were fully mobile in changing jobs there wouldn't be difference in wages because the workers were ready to move to a company that paying higher wages. This often not happen because of the cost of mobility, so workers must make a decision when search for a new job and bear the costs of job search, and when they need to wait with search for a job. Unemployment is a problem that brings costs to society, they can be economic and social problems. The mobility of workers provides a balance in the labour market, encourages employment and productivity and it is indispensable for the successful functioning of the labor market. The costs of mobility are composed of cash expenses including travel expenses and expenses of finding a job and non - cash costs that include missed earnings and psychological costs that arising from the loss of their enviroment and coping with other cultures. Employers meet with friction in finding and hiring workers. Finding employees is one of the most important processes that are carried out within the company. There are a two main sources of finding employees: indoor and outdoor choices of finding employees. Internal sources consist of candidates who work at other jobs within the company, from the other side, external sources consist of people who are currently unemployed or working in other companies. Employers should pay attention to education and training of employees, because they can acomplish competitive advantage in the market with quality investment in knowledge, skills and abilities of employees and with continuously improvement of business. Employees have at their disposal a variety of training methods to acquire necessary knowledge and skills. Training is usually carried out in the workplace and outside the company. Companies that invest in training and development of workers have an advantage over companies that do not invest in training. These companies will be more attractive to the unemployed people on the labor market. All companies pay much attention to their cost, ie. they seeking to do business with as lower costs because the primary goal of the company is to make a high profit and lower costs.