Request a salary review after successfully reducing costs or saving money for the company through your initiatives.
Dear [Manager Name],
I am grateful for the opportunity for work for this esteemed company. In my best efforts to improve our work, I have managed to make considerable saving the in costs involved in our business. These savings came out of my continuous peruse to improve our processes by minimizing the company's costs. [List here what are the savings you made, by how much and how you accomplished that].
Based on the facts and figures presented above, I would like to kindly ask you to consider a salary review commensurate with the efforts I am putting to reduce costs and save money.
Thank you.
Sincerely,
[Your name]
[Date]