Definition - What does Undue Hardship mean?
Undue hardship is when an action creates more financial hardship than a person or company can reasonably afford. The term is most often used in employment law when a company refuses to hire people with certain disabilities or who do not have certain skills. Their decision to create parameters for the work is in line with employment law so long as the person or company can show that it is not viable or infeasible to pursue a certain course of action.
Justipedia explains Undue Hardship
This term crops up in family law in circumstances where child support or alimony is being calculated in cases where there are extremes to the financial circumstances of one or both spouses. This can be either through having excess discretionary income or through having an excess amount of debt.