How does attrition affect the job numbers?

 Economics not being my strong suit.  It is not an uncommon business practice that when someone leaves, passes on or retires the company doesn't replace them.  Many companies probably won't even officially acknowledge they've adopted a policy of attrition but the remaining workers are bound to notice over time.  Everybody else has to work harder of course and in some cases you're left with a skeleton crew.  I feel like at work in our department we're skeletal or close to it.  So rather than rambling further I would submit that Trump instead of firing some top labor stats person should make a sincere effort to understand the numbers better if they are poor.  The question: how common is the business policy of attrition and how significantly does it affect the jobs report?