DH works for an agency part time. He has 2 autoimmune diseases so this helps him be able to work but in a way that is manageable to him. He's been there over a year, built up a good reputation and is experienced in the field and more qualified than others with the agency. He is on a low wage but for the work he does, it's pretty standard. However, yesterday, he got chatting to a member of the same agency who has been there for just 2 months but is on higher, hourly pay then he is despite being less qualified. DH really not happy, aibu to say this is massively taking the mick?