The following are examples of church and regional (diocese, presbytery, synod, conference) employee handbooks:
Guidance by Tradition
PC(USA): Employment Guidance for PC(USA) Sessions and Session Personnel Committees (2021) includes a section on employee handbooks and the topics they should cover.
ELCA: your synod office and Portico Benefit Services can help with the benefits section.
UMC: your annual conference and Wespath can help with the benefits section.