No, part of the original LCC model (Southwest, easyJet, Ryanair) was to pay staff well, in order to attract and retain them
Some staff in LCCs get paid well, basically the highly skilled and difficult to replace ones such as pilots. Salaries are comparable to full service airlines but lack the standard extras such as loss of licence, pension etc, and they work harder for it.
Cabin and ground crew terms are quite poor and result in high turnover, but obviously this works out for LCCs financially, vs higher pay and lower turnover.