to show appreciation for (efforts, esp. by someone of equal or lower status); to thank for; to reward for
プロジェクトを終え、部長はチームを労った。
After completing the project, the manager thanked the team.
マラソン後、ボランティアは走者を労って飲み物を配った。
After the marathon, volunteers distributed drinks, appreciating the runners.
社長は残業した社員を労う。
The president thanks employees who worked overtime.