I'm not sure I entirely understand your question, so let me try to re-frame it just a little
Two responses (Y):
1. Damage, Likert-like scale: High, Medium, Low
2. External factor, Likert like scale: High Medium Low
Factors (X):
1. Frequency of lifting: Always, Sometimes, Rare
If we can define the problem a little more I think the analysis will be easier to select.
JMP Systems Engineer, Health and Life Sciences (Pharma)