For work you must use a height adjustable desk. It doesn't have to be electric, you just need to be able to adjust it to your correct work height. If you don't use it, and I don't know work at your kitchen desk, that's technically a violation of workspace rules. Your boss tell you to use a proper desk, because if they don't they can be fined.
You also can't use the keyboard and trackpad on your laptop. You must be provided with a separate keyboard, mouse/trackpad/trackball and a monitor. Working on your laptop is for emergencies or very brief tasks.
European workplace ergonomics rules have been like this a long time. Computers were beige for decades because German ergonomics laws mandated office equipment in light, neutral colors.
You also can't use the keyboard and trackpad on your laptop. You must be provided with a separate keyboard, mouse/trackpad/trackball and a monitor. Working on your laptop is for emergencies or very brief tasks.