The term REASONS FOR OVERTIME can be summarized as the causes or motivations for working beyond the normal hours of a job. Overtime is often necessary when an employee is required to complete a task that cannot be finished within the allotted time frame, or when an employer needs additional help to meet a deadline. TIES, a four-letter solution to the crossword, could refer to the obligations that an employee has to their job, such as contractual agreements or loyalty to their employer.