Visitsak focuses his practice on regulatory compliance, mergers and acquisitions, capital markets, litigation, taxation and general corporate matters. He advises foreign and Thai multinational clients on regulatory compliance in their business operations and has represented them in various cases. Arising out of his work for energy and telecommunications companies in various M&A deals and concession-related disputes, Visitsak has also expanded his practice to include disputes with government agencies over the terms of concessions and administrative decision-making.