(Reuters) – Amazon.com Inc plans to more than double its base pay cap to $350,000, from its previous maximum salary of $160,000 for U.S. employees, according to a company memo. The e-commerce giant will increase the overall compensation range for most jobs globally and the company said the increases were much more “considerable” than in the past. “This past year has seen a particularly competitive labor market,” according to the memo, which added that there was a “need to remain competitive for attracting and retaining top talent”. Last year, Amazon increased its average starting wage for oper…