Amazon Japan has notified its package delivery drivers that it is lowering compensation rates from April 5 and stated it will terminate contracts if employees do not accept the changes.

For many drivers, the rate changes the company notified them of meant a pay cut, and a number of workers have since reached out to Japan’s Fair Trade Commission.

Among them is a 33‑year‑old man working as a delivery driver in the Kansai region. The job pays him about 100,000 yen ($628) per month, accounting for roughly half of his monthly earnings.