7% gender pay gap for Uber drivers

The flexibility of the gig economy was supposed to eliminate the gender pay gap.  At Uber it didn't:

 ...the entire gender gap is caused by three factors: experience on the platform (learning-by-doing), preferences over where/when to work, and preferences for driving speed. This suggests that, as the gig economy grows and brings more flexibility in employment, women’s relatively high opportunity cost of non-paid-work time and gender-based preference differences can perpetuate a gender earnings gap even in the absence of discrimination.

HT:  Peter Klein