Which of the following is a sign of potential substance issues at work?

Frequent calls in sick can be a sign of potential substance issues at work because they may indicate that an employee is struggling to manage their health or wellness, potentially due to the effects of substance use. Employees who engage with substances may experience various physical and emotional difficulties that can lead to increased absenteeism. This behavior might suggest that the individual is not able to fulfill their work responsibilities consistently, as they may be experiencing withdrawal symptoms, emotional instability, or other health-related challenges linked to substance use.

In contrast, a significant increase in productivity, complete adherence to safety procedures, or volunteering for additional tasks are not typically associated with substance issues. In fact, these behaviors could indicate a stable and engaged employee. Productivity boosts and safety compliance often reflect good performance, while taking on extra responsibilities can signify motivation and capability in the workplace.