Like all sports, you see the "winner takes all" aspect when it comes to pay. The very best riders make millions, the team workers can collect the UCI minimum wage.
Here's what the rules (Article 3 or the Pro Tour Contract) say for the minimum wage:
1. The Rider shall have the right to gross annual pay of [....] .This pay may not be less than the higher of the two following amounts:a) The legal minimum wage of the country of the nationality of the UCI ProTeam as defined
under article 2.15.051 of the regulations;
b) € 30,000 (€ 24,000 for a new professional).
People like Valverde, Evans, Boonen, Cunego, Cavendish and other stars will earn millions. Some comes in salary but also from other areas, like endorsement.
But compared to other sports, the pay is not as high. This partly reflects the fact that the TV money is paid to race organisers, not to the teams. Also most team sponsors are relatively small companies. Rabobank and Saxo are small banks, Quick-Step sells laminate flooring and Lampre sells galvanised steel. There is no Intel, BMW, Coca-Cola, Danone, Sony or Samsung sponsoring the sport.