What are the city's procedure/polcy/regulation/departmental rule/ ordinance etc., that dictates the obligation of an employee of the WFD and DPW when calling in sick?

Please see attached public request and response.

Supplemental question: Where is the information entered, and who is responsible for contacting the replacement of the individual who is calling out sick? How is that sick day compiled on the employees time sheet?

Please see attached supplemental request and response.