Some black and white cartoons I drew in 2004 to a course on projects managing. No “masterpieces” but they work to illustrate some usual office situations. You are free to copy and remix since be attributed the authorship and not be used for commercial purposes, pornography, political party propaganda and prejudice against any group of persons. 
Other cartoons can be found in the link:
https://tuliovilela.wordpress.com/2015/07/10/ilustracoes-para-curso-de-gestao-de-projetos/