Lynette Finch has often been commissioned by unions in Queensland to work with their members and produce posters which deal with their experiences in the workplace. She originally learnt techniques of screenprinting and political poster design from Michael Callaghan who, while artist-in-residence, established the screenprinting workshop at Griffith University in 1979. Soon after, she established Mantis Prints with Cherie Bradshaw. During the next twelve months, they each designed and produced numerous posters, many of which deal with issues relating to women. An important element in Lynette Finch's posters is her use of humour. She sees humour as a weapon which is used particuarly effectively by women to raise awareness of very serious issues such as sexual harassment and rape. She will often take a recognisable image from sources of popular culture, such as romance comics and B-grade Hollywood movies, and add text to produce a witty and biting statement.