One of the ladies that works for me complained that she was paid less that one of her co workers. We took this very seriously and HR did a study on her rate. She is paid at the intended target 50th percentle of the industry average for her position. In spite of the fact that she has been on maternity leave for 3 of the past 4 years she has seen regular increases and collects vacation time despite being on maternity leave.

The co-worker she was comparing herself to is in a higher salary band because he has 7 years more experience in his profession than she has and his objectives, results and work load reflect that.

In spite of this she remains disgruntled about it.