Unless you have an employment contract which obligates you to provide notice or to work for a certain length of time, you may resign at any time you wish. Note the following:1) If you resign, you are not eligible for  unemployment.2) If the company believes you defrauded it by falsying hours--basically, that you stole money from it, by making it pay you for work you never did--it could either a) sue you to recover the money; or b) potentially report you to the police, if it thinks the matter egregious enough. The fact that you resign may, as a practical matter, make it less likely the company will do this, but it does not actually prevent them from doing so.