Update Vacation and Sick Leave.md

Author: andreseg

Benefits and Perks/Vacation and Sick Leave.md

@@ -6,4 +6,6 @@ Employees also accrue 1 hour of sick leave for every 30 hours of work, but canno
 
 Employees should report vacation and sick days to the founder they report to, who will mark it in the payroll system (which keeps track of accrued days and should include them on every pay stub).
 
+Employees will not be paid for time off that results in a negative balance to their accrued vacation days.
+
 Employees with chronic or terminal illnesses should talk with the founder they report to about their needs for remote work, flexible time, disability leave and/or other support.