One of the tools we used for this project was a program called Army Builder by Lone Wolf Development. This tool was invaluable for paper prototyping out our changes by being able to rapidly prototype various constraints within the game its self. The following is a video showcasing some of the functionality of the tool:
Attached you will find the official Mad Badger Studio contractor handbook that I created for our company, complete with contracts. It is an iteration on a handbook I wrote for a previous game dev company. This handbook was created with the goal of creating a fun, enriching and encouraging environment, while still making sure our legal asses are covered. Please feel free to use it as a template for your company if you so desire, but ensure to change your data where applicable to reflect your company.