Well, your gut is telling your something. But I,woild be more concerned with the quality of the work than strict accou tability of time.
In this economy it is extremely difficult to get a competent work,sn to your home. We can co tact many, but few will return calls. Of those who return calls, few will agree to the job.
Now, if your supply chainof handy,en is different, the disregard my advice.
Disclaimer: before he retired, DH did hamdymann/light comstruction work and he worked 12+ years for our friends and neighbors, never advertising, seldom working outside of this immediate area. A good handyman often works on a time and materials basis be ause people,just want the job done right.