clarifying whose fault it is

I am currently working as a supervisor in a supermarket. I had an argument recently with the manager and It was clearly not my fault. Then in the end parang ako pa ang may kasalanan. Pansin ko most of the time she covers her mistakes. Parang babaligtaran niya ang story then ikaw ang magiging kawawa in the end. Tipong magaling talaga maghugas kamay.I am just wondering if its really part of the Manager's role? Ganyan ba ang being professional sa work? Kasi in my place, If I have a mistake when it comes to work, I usually admit it. But now, I felt unfair, kasi most of them they usually cover up their mistakes.

were you actually blamed for the mistake? how was this shown or expressed? in a written document or report? verbally?

you need to clarify this. if it was eventually blamed on you, then you need to set the record straight as that may eventually end up on your performance appraisal. it is best to get this cleared out as soon as possible. the longer you wait the more people will forget the details and getting to a clear point of view will be difficult.

exactly how to do that will be the challenging part. you already had a discussion on the matter and as you have said, an "argument", so that means when you talk to her about it, it might not be a good one.

when you get a clarification on whose fault it is, you need to do it in a different way and a fresh healthy attitude so that the discussion do not get into an "argument". you have to avoid having an argument, you need to discuss it calmly. and since you are the initiator and the "aggrieved party" you specially have to change your attitude.

perhaps the way to do this is a discussion with the objective of improving things or changing things for the better that will lead to the same mistake not recurring again. you can give it a thought and think up of solutions to it. that will be the framework of the discussion you will have that will lead to getting a fix or a conclusion that it was not your fault.

think about this carefully. remember - no arguments.