office routine guide; official duties manual
A document or set of rules outlining proper conduct and procedures in an office or official setting.
New employees are first made to read the office routine guide.
The official duties manual contains the basics of telephone etiquette.
就業規則 is a broader set of work regulations including working hours and leave, while 執務心得 focuses on daily conduct and procedures.
Compound of 執務 (office work) and 心得 (knowledge, rules).