A UK national, labor activist, researcher, and writer Hall was tried in 2013 for both criminal and civil defamation for his investigative reports alleging abuse by National Fruit Company Limited, a Thai fruit processing company. In late 2015, charges were dismissed. Despite this, Hall continued to face legal harassment for years, including additional charges stemming from a 2013 interview and lawsuits over his reporting on labor exploitation. The Thai Supreme Court ultimately cleared him of all charges in 2021, affirming his actions were conducted in good faith.