Not right now, seeing as I was given the annual pay review recently anyway.
I am currently undertaking ALOT of training on various systems for my role, as well as starting a course with much more 'depth' later this month to enhance my qualifications. By March/April I will be fully trained up to match one of my colleagues, as my manager has stated he wants our roles to be interchangeable in the event of holidays, sickness absence etc, so we'd essentially be doing the same job.
I am on approximately 5K less than this colleague (who is the same age as me), would it be unreasonable of me to ask, once my training is compete, that my pay be bumped up to match my colleagues?
I have never asked for a payrise before, and I don't want to come across as grasping or ungrateful, so am just worried how this could come across?