Workers at cash-rich container lines continue to pocket big year-end bonuses.

Caixin Global has reported that employees at China's state-owned Cosco Shipping Holdings have received a payout worth up to 30 times their monthly salaries.

Cosco is doling out the cash to workers including sales and marketing staff, Caixin said, citing employees at the company.

The group's earnings jumped 1,651% to CNY 67.6bn ($10.7bn) in the first three quarters of 2021, according to a company filing, as boxship markets boomed.