My husband was injured on the job, for the second time, involving the same knee. This summer he had his second surgery and has been treated very well by the work comp insurance company. He was just given a 5% PPD and has been issued two checks (looks as if they are in two week increments). These checks were totally unexpected and a pleasant surprise to us. My question is this, for how long will he receive these checks? For life since it's a permanent disability?