Finger joint pain at work is usually caused by fatigue injury, tenosynovitis or osteoarthritis. 1. Fatigue injury: excessive labor of finger joints can cause fatigue injury, causing wear and tear of the joints or osteoarthritis, so it will cause pain when you move. 2. Tenosynovitis: For people who work with fingers for a long time, tendon friction for a long time will cause tenosynovitis, which will cause pain in the joints as soon as they work. 3. Osteoarthritis: it occurs in middle-aged and old-aged patients, is a degenerative disease, due to prolonged strain will lead to tissue degeneration, the pain will be more obvious in finger activities, and can be relieved after rest. Work finger joint pain may also exist other reasons, it is recommended to go to the hospital to clarify the cause of the disease, and for the cause of the treatment.