This white paper discusses the phenomenon of "malicious compliance", where an employee follows their manager's instructions to the letter in a deliberately unhelpful or counterproductive way, usually due to past resentment over a reprimand. The paper provides an example of an IT worker who is embarrassed by a public telling-off and then only works strict 9-5 hours. It warns that malicious compliance can sabotage projects and advises managers to have empathetic discussions focusing on outcomes, give clear short instructions, and truly listen to disgruntled employees who may have valid technical concerns.