Labor disputes are classifiable into disputes on rights based on laws or agreements, and disputes on conflicting economic interests. Disputes on rights are adjudicable, with suitable quasi-judicial adjustment machinery, provided such disputes may be settled without any need for strikes or lockouts. Disputes on interests, while non-adjudicable, may or may not be arbitrable. Under "functioning trade unionism" only vital disputes on interests need occasion strikes or lockouts. The industrial legislation in the Scandinavian countries, in the post -war German republic, and that regulating the United States railroad labor relations, offer outstanding instances of consistently differentiated adjustment machinery for disputes on rights and on interests. Present-day labor agreements in the United States in a few industries have similarly differentiated provisions for adjusting disputes. In many other agreements, however, the provisions for adjusting disputes on rights are imperfectly suited to the quasi-judicial nature of such disputes. A more widespread adoption of the "railroadtype" of adjustment machinery for industries operating under collective agreements would seem a large step toward the establishment of better industrial relations.