Tougher rules being enforced in Japan will see employers fined if they fail to take adequate precautions to protect workers from extreme temperatures.

The revised legislation, which came into effect on Sunday, is a rare global example of a national-level policy on heat safety for employees, and comes after 30 workplace deaths and roughly 1,200 injuries last year associated with high temperatures, according to health ministry data. Most of those affected worked in construction or manufacturing.

The government moved to strengthen protections following last summer’s searing heat — which included the highest July temperatures on record, the ministry said in a statement. Businesses will face potential penalties including fines of ¥500,000 ($3,475) if provisions aren’t sufficient.