June 14 (Reuters) - Hundreds of social media moderators in Germany – who remove harmful content from platforms such as Facebook and TikTok – are calling on lawmakers to improve their working conditions, citing tough targets and mental health issues.

Cengiz Haksöz, who has worked as a content moderator at outsourcer TELUS International, is due to appear before the Bundestag's Digital Council on Wednesday when he is expected to tell lawmakers his work screening harmful material left him "mentally and emotionally drained".

TELUS International is a well-known provider of content moderation services for Facebook, among others.

Social media firms like Meta's (META.O) Facebook and Bytedance's TikTok work with thousands of content moderators around the world, responsible for blocking users from seeing harmful content such as child pornography and images of extreme violence.

Haksöz is expected to deliver a petition, signed by more than 300 content moderators in Germany, calling for a new set of legal protections for those in the industry, including improved access to mental health services, a ban on non-disclosure agreements (NDAs), and improved pay and benefits.

"I was led to believe the company had appropriate mental health support in place, but it doesn't. It's more like coaching," said Haksöz, speaking exclusively with Reuters ahead of his Bundestag appearance.

"This is a very serious job, and it has serious consequences for workers. This job has changed me," he said. "And these outsourcers are helping the tech giants get away from their responsibilities."

Meta has faced mounting pressure over the working conditions of content moderators keeping its platform safe. In 2020, the firm paid a $52 million settlement to American content moderators suffering long-term mental health.

Martha Dark, director at nonprofit Foxglove, which helped organise the campaign, said the petition marked a "major step forward" in improving content moderators' working conditions.

"Moderators are the internet's frontline defenders against toxic content," she said. "This support is urgently needed."

Meta and TELUS International declined to comment.