Graphic designer Jessica Hische has developed a tool to help creatives respond to requests for work. Made with designers in mind, photographers who are frequently asked to work 'for exposure' or very little pay might find it appealing too. The choose-your-own-adventure style tool helps you build a letter based on the client and the proposed budget – none, very low or good. It will also help you negotiate other tricky situations like an ambiguous timeline or very quick turnaround. 

Hische's tool creates a letter that's polite but firm, and more than just saying 'no,' aims to inform the asker why creative professionals must insist on being paid for their work. It also offers terms for taking on no-budget projects for charities and friends.