Greek farmers’ unions have been in negotiations with Prime Minister Kyriakos Mitsotakis’ conservative government for weeks, but say the measures announced so far don’t go far enough to meet their concerns.

On Monday night, farmers lined their tractors and pickups along highways as they gathered at a meeting point in central Greece, where they spent the night before heading to Athens.

On Tuesday morning, dozens of farmers arrived by boat at the port of Piraeus from the southern island of Crete. More farmers were expected to arrive by bus from other areas across Greece.

The rally, scheduled for 1530 GMT, was aimed at piling pressure on the government, which has already offered discounts on power bills and a one-year extension of a tax rebate for agricultural diesel to the end of 2024.

The government reiterated on Monday that t is willing to discuss a more permanent tax rebate scheme in the future, but it had no fiscal room for any further concessions this year. Greece has been recovering from a decade-long financial crisis.

“We have nothing more to give,” Mitsotakis said during an interview with Greek Star TV on Monday evening.

“I think farmers acknowledge this and know very well that the government has probably exceeded even their expectations, especially on the power bills issue.”

He said the rally was expected to be largely symbolic, but farmers appeared determined to push for more concessions.

Their protest echoes grievances in other parts of Europe, including France, Belgium, the Netherlands, Poland, and Italy, where farmers have staged similar demonstrations.