In your shop, what is strongly suggested all things being equal that you keep heavy goods on or near the floor! Although there is no limit as such, as a general guide anything over 45 kgs needs to be looked at ASAP.
But that’s just the tip of the iceberg
Legally a heavy item depends, on many factors eg if the item is wet or slippery if the items are stored in a cramped area so that people had to assume awkward positions to lift them etc. Here is a guide for retail that explains much of it from a legal point of view.
The other issue is forgetting the legal problems, do you really want anyone to get hurt? Everyone is trying to do the right thing here.
So what can you do about it?
So once you have identified the heavy stock, move them to safe areas.
What I further recommend is that you mark in your software these items so that people will just by looking at the item on the screen know that they are potentially looking at a lifting problem and these items require special handling.
You’d do it like this:
Go to stock maintenance in your point of sale software -> Edit marked them as in the red box.
Just another example of how our software has useful items that you can use.