Most of Polish middle management speak good English. The challenges they face are historic. They have not worked extensively in competitive markets as before 1990 all markets were controlled and most companies were huge state. Privatization in the early 90s broke up the large corporations. Polish businesspersons also face a language problem - they speak technical English, not conversational English.
Employees change rapidly, moving around for greater opportunity.
The currency has inflated a lot, so it is usually better to do contracts in the American dollar. All Polish employees get contracts, usually for 1 year. Benefits include 30 days paid vacation for the first year. It only costs a couple thousand dollars to start a business, and legal issues and accounting are not a lot different. The tax system needs to be dealt with diligently with monthly filings.