Workers Benefit - question

If a couple only has one person working, and the other spouse does not have working income, are they still eligible for this credit? The combined income is only from one spouse just under 47,000

I can only answer yes to one spouse with working income? If I say no to the other, it makes them ineligible? Are they eligible or not?

The combined working income is from the couple, even though one partner has no income.