Sick-ins are a relatively new terminology that refers to employees calling in sick to their workplace. Many synonyms exist for this popular phrase, depending on the region or industry. For instance, "calling in sick" is the most common term in North America, whereas "pulling a sickie" is more prevalent in the United Kingdom. Other synonyms include "lying low," "taking the day off," "calling out," "playing hooky," and "taking a sick day." Companies have different policies and rules regarding sick-ins, which may include requiring employee documentation or limiting the number of absences allowed. Therefore, it is crucial for employees to understand the expectations and consequences of calling in sick.