All of this is a monster tangle. Good thing I am not an attourny.
There is a risk of your job being terminated (not you, your job)
leaving you with an empty pay check.
Keep an honest hand written log. Modern GPS enabled phones
and free mail services make keeping and verifying logs a lot easier.
For example, the time stamps inside of Gmail or Yahoo mail are not in your control.
The log helps quantify and communicate reality. For you, your
counsel and the company. Legal "what-if" discussions are fine but they
will pay last month and eliminate next month.
A log that last a couple years is almost a retirement package for
some.... (gross exaggeration).
If you are on call (cannot go fishing, cannot go to or get reimbursed for blown baseball
or concert tickets) they need to pay for that time that they control. If travel
is paid differently and there are two of you they have some obligation to level the pay
ratio. Part time employee games and insurance are another tangle.
Be honest, log honestly, report to them honestly perhaps with a work sheet
attached to you time card.
Bio breaks, sleep breaks, meals often have legal requirements.
I do know that summer hands hired on a job I worked made out like bandits.
A lazy bureaucrat said "pay them" $xyz where xyz was well above the going
rate and then reported a flat 40 hour week (lazy part). One of these kids
called and all the 40 hour weeks became an honest 70+ hour week that
was then compensated at $xyz per hour full including time and a half and double time.
These kids made out like very well, so well that the couple "good ones" when made
a full time offer expected better than the $xyz pre graduation, pre full time employee.
All because some twit was "Lazy" and a couple smart kids kept honest and accurate note books (part of the
job was to keep accurate field notes).
Had this been addressed at the beginning of the season wages would have been adjusted (down)
however it did not hit until the last week of the summer season... ALL the summer hands
got paid a big as heck ADJUSTMENT not just the one kid that called Labor Standards and Enforcement.