At least one million Ukrainians are currently working in Poland, according to estimates. The economy in Ukraine, still hampered by war and corruption, is sluggish, while across the border, there's been uninterrupted growth and even a labour shortage – partly because so many Poles have moved further west. Ukrainian businesses, meanwhile, are finding it increasingly hard to hold on to their workers. Our correspondent Gulliver Cragg reports from Ukraine and Poland.
A programme prepared by Patrick Lovett, Emerald Maxwell and Jimena Morales-Velasco.