A garlic bread manufacturer has been charged with workplace manslaughter after a labourer fell about four metres to his death at a warehouse in Melbourne's north.

WorkSafe on Tuesday announced it had charged Risham Nominees Pty Ltd, trading as Centenary Bakehouse, about 18 months after the 53-year-old worker died in August 2021.

The labourer was removing suspended ceiling panels at a warehouse at Reservoir before he fell on to a concrete floor, with WorkSafe alleging the company's negligence and breach of duty led to the man's death.

Risham Nominees is charged with two counts of workplace manslaughter and several more charges under the Occupational Health and Safety Act, including allegations that it failed to provide and maintain a safe working environment.

The watchdog alleges the manufacturer contravened the act by failing to prepare a safe work method statement before high-risk construction started, and that it failed to ensure the warehouse was without health risks.

The matter is due in the Melbourne Magistrates Court on May 24.

Centenary Bakehouse refused to comment.