Ministry of Economic Development, Labour and Technology PR has developed a regulation to allow participants of the Poland. Business Harbour Programme to work in Poland without the work permits or registered work statements.
This means that during the period of validity of the P.BH visas (usually one year period), their holders will be treated equally as Polish citizens and the employer doesn’t need to do anything to employ them legally.
The regulation was amended with the date of 25.11.2020. and becomes active with the date of 1.12.2020.
More about the programme here.
Full regulation document here.