Coal mining: ~50,000 jobs (per BLS, described here: https://www.politifact.com/truth-o-meter/statements/2017/jun...)
Payless globally: ~18,000 jobs (and international stores are not closing, per https://www.cnn.com/2019/02/15/business/payless-closing-stor...)
0: https://en.m.wikipedia.org/wiki/Coal_mining_in_the_United_St... 1: https://www.cnn.com/2019/02/15/business/payless-closing-stor...
Source?
18000 Payless employees in 2017 [1]
~50000 in mining industry [2], ~10000 in extraction [3] in 2017.
So it's probably not true that it's more than the entire coal mining industry. But, more than the number of actual coal miners? Possibly.
[1] https://en.wikipedia.org/wiki/Payless_ShoeSource
[2] https://www.bls.gov/oes/2017/may/naics4_212100.htm
[3] https://www.bls.gov/oes/2017/may/naics4_212100.htm#47-0000