Industrial productivity and growth have suffered from a shortage of trained workers and technical personnel. The supply of skilled workers in the fall of 1972 was reported to be only half the number needed to fill available positions. Responsibility for this situation has been placed, in part, on the lack of coordination between the industrial ministries and the Ministry of National Education concerning technical and vocational training programs. There has been a pronounced disproportion in the numbers of trainees in the various technical specialities, and technical training generally has not been up to the level demanded by modern technology. Enterprises themselves have been slow in undertaking to train their own workers. The scarcity of skilled personnel has been accentuated by the export of trained workers to the Soviet Union to help develop the exportation of mineral and timber resources in return for raw material imports. Poor labor discipline and excessive labor turnover have aggravated the shortage of skilled workers. The turnover has been particularly high among younger workers. Dissatisfaction with the job, or with living and transportation conditions, and the search for better pay have been cited as the main reasons for the turnover. Progressively severe measures have been introduced to enforce stricter labor discipline, but their effectiveness has been weakened by lax application. One of these measures concerning movement of labor gave workers the right to quit their jobs freely but stipulated that any worker seeking reemployment had to do so through district labor bureaus set up for that purpose. The bureaus would direct the job applicants to industries and positions where labor was most urgently needed. Because of the shortage of skilled labor, however, enterprise managers continued to hire new labor without regard to the requirements of the law. The shortage of adequately trained personnel adversely affects the utilization of available capacity; it entails frequent breakdowns of machinery and inhibits multishift operation of plants. More than 20 percent of worktime is usually lost through idling, and equipment is used at no more than 50 to 60 percent of capacity. New plants completed in 1967 had not reached full production in 1972. Productivity has also been kept low by the lack of mechanization of auxiliary activities, such as loading and unloading, inter- and intrashop transport, and warehousing. In 1972 the minister of labor and social welfare stated that labor productivity in Bulgarian metallurgy was only half as high as in some of the advanced industrial states.