Compulsory insurance can be against old age.Logical formLearned from1 sentences. Compulsory insurance can be a feature of systems.Logical formLearned from1 sentences. Compulsory insurance can be against industrial accidents.Logical formLearned from1 sentences. Compulsory insurance can be a necessity.Logical formLearned from1 sentences. Social insurance can be compulsory.Logical formLearned from1 sentences. Compulsory arbitration can be a method of securring peace.Logical formLearned from1 sentences. Industrial disputes can be subject to compulsory arbitration.Logical formLearned from1 sentences. Compulsory arbitration can be by a court.Logical formLearned from1 sentences. A principle of compulsory arbitration can be familiar to students of (labor problems).Logical formLearned from1 sentences. Compulsory arbitration may be improved.Logical formLearned from1 sentences. A status of compulsory arbitration can be uncertain.Logical formLearned from1 sentences. A form of compulsory arbitration may be adopted in a country.Logical formLearned from1 sentences. Compulsory arbitration may be adopted.Logical formLearned from1 sentences. A refusal of labor may lead to a development of a principle of compulsory arbitration.Logical formLearned from1 sentences. An investigation of industrial disputes can be compulsory.Logical formLearned from1 sentences.