Abstract: A mechanism for relieving stress on the hands of a person operating a computer, is provided by a panel adapted to be anchored to the underside of a conventional computer keyboard. A hand-support bar is located in front of the computer keyboard, between the front ends of two swingable arm structures pivotably attached to the panel alongside the keyboard. The hand-support bar can be raised or lowered by swingably adjusting the arm structures. Each arm structure has an adjustable length, so that the hand-support bar can be moved toward or away from the front edge of the keyboard. The hand-support bar is rotatably adjustable around a longitudinal axis located near its lower edge, such that the upper surface of the bar can have a desired engagement with the palm area of the person's hand.