A more thorough explanation:

Definition: Sick leave is when an employee takes time off work because of an illness or injury. This means that if you are feeling unwell or have been injured, you can take time off work to recover without losing your job. Some employers may offer paid sick leave, but there is no federal requirement for it. However, employers subject to the Family and Medical Leave Act (FMLA) are required to give their employees unpaid sick leave. The FMLA allows eligible employees to take unpaid, job-protected leave for family and medical reasons. For example, if you need to take care of a sick family member or have a serious health condition yourself, you can take up to twelve workweeks of leave in a year's period.

Example: If you wake up with a fever and a sore throat, you may need to take sick leave from work. This means that you can stay home and rest until you feel better without worrying about losing your job. Another example is if your parent is sick and needs your help, you can take unpaid sick leave under the FMLA to take care of them without losing your job.

Explanation: Sick leave is important because it allows employees to take time off work when they are not feeling well or need to take care of a sick family member. This helps them to recover and take care of their loved ones without worrying about losing their job. The FMLA provides job protection for eligible employees who need to take unpaid sick leave for family and medical reasons, which is important for their peace of mind and financial stability.