The new law, which came into effect on Just 1st, states that foreign employers have to report when a foreign worker is assigned to work to Sweden for more than five days. The employer must report to the Swedish Work Environment Authority (Arbetsmiljöverket) at the latest when a posted worker begins work in Sweden.
Mikael Sjöberg, head of the authority, believes the new system will allow a smoother transfer for workers posted in Sweden and will to more transparent and simplified monitoring.
"There's more information available about who is actually in the country, so that both we, and for example the union, can review the operations," he told Sveriges Radio (SR).
Companies in the construction, IT, and manufacturing industry make up the bulk of the roughly 1,000 firms who have so far signed up for the scheme.
While the new law is a step in the right direction, according to Claes-Mikael Jonsson, a lawyer at the Swedish Trade Union Confederation LO, he worried that some companies won't take it seriously.
"This looks good on paper, but it has no relevance in practice for the posted workers who are in parts of the Swedish workforce where anomaly is the biggest," he said.
The Work Environment Authority is charged with monitoring that rules on registration are followed, and any employer that does not report a posting will be fined 20,000 kronor ($3,075).