Need Advice about Load Shift Issue

I drive the 80E and 880S in CA and my boss is trying to blame me for load shift even though I secure the aft with load bars and straps...they always load it staggered and there are spaces on either side of cargo. When I arrive it is slanted and pallets look like leaning tower of piza. I drive 55mph and 15mph or less on curves or 1/2 the ramp speed whichever is less. What should I do? I'm union so not worried about getting fired but trying to figure out how I can explain that this is not my fault and it is because road is damaged. A few other drivers have had similar issue but not as often as I have but I cant help if I get a crazy loaded trailer...

 

It's stuff like 6pk, 12pk, 36pk canned beverages. I usually take picture but they insist it's my driving even though my On-Board Event Recorder is clean. I agree they should be using dunnage to fill the spaces!(Common Sense) but they dont want to spend the extra money on dunnage so I just use load bars and have some ratchet straps for the aft.

 

1. I am not present when loading.
2. I cant refuse to leave because there's no dunnage; dunnage they dont have.
3. Cant tie it down 53' dry van and I would have to climb over freight to add more straps inside and risk injury; not worth it.
4. I could ask the lift operators to reload but they dont have the materials to fill the gaps.

Finally, I dont appreciate your tone in the message, if you recall this is posted in the experienced sub forum...I've been driving since late 2000's and before that drove in the military.

Don't assume without knowing the facts. Assumptions are quick exits for lazy minds that like to graze out in the fields without bother.

I should have stated what kind of trailer and cargo...

 

The aforementioned suggestions is what I'm going to try and convey and work in to my conversation with my superior thanks.