What is the Calvinist perspective on John 5:28–29 in regard to earning salvation?

John 5:28–29 seems to teach salvation by works: > Do not marvel at this, for an hour is coming when all who are in the tombs will hear his voice and come out, those who have done good to the resurrection of life, and those who have done evil to the resurrection of judgment. (ESV) How do Calvinists explain this passage?