title: Can we calculate Net Salary with openERp
body: <p>In our company we decided to use <code>openERP</code> 
  We now working to customize <code>openERP</code> with our work ... we can use it successfully in warehouse dept. and sallies  dept. </p>
  
  <p><code>My question is</code> how to make <code>openERP</code>  calculate <code>monthly Net Salary</code> 
  with deduct if the Employee absence or leave the work or if we decided to add bonus  </p>
  
  <p><code>and if we can</code>  programming new model and add it How this difficult to work and what about expected time  required to do </p>
  
  <p>OR how we can access to fields related with attendance and building our own program to calculate    <code>Net Salary</code> ?</p>