Labor-management disputes are still a troublesome issue.
Literal
Labor-management disputes [topic-は] still troublesome problem [copula-だ].
労使紛争 (ろうしふんそう, 'labor-management dispute') compresses 労働者 and 使用者 into two characters. いまだに ('still, even now') marks persistence. 困った問題 ('troublesome problem') uses the past form of 困る as an adjective.