Depends on the future. Do you want to be offered more overtime in the future, or less? The answer is different for everyone, but if you say no to overtime, it gets offered less frequently.
Not really. I’m pretty maxed out on my regular hours. I had to decline offers for full time hours because I knew I couldn’t do much more. Fewer offers wouldn’t necessarily be a bad thing for me.
If you are able to turn down extra hours without being retaliated against, it makes sense to turn it down. Just remember your boss ultimately has the power, and being rude about it will affect you more than it affects her.
Yes and no. I sometimes help out on Saturdays when branches are short of commercial employees and a customer needs a policy endorsement made (a lot of business owners do their paperwork on the weekends). I’m able to do it remotely and print the documents locally at the branch I’m servicing. I’m on salary so I don’t get paid extra for it, but I have a reputation for going above and beyond for customer service that helps during evaluations. I have never failed to get a raise each year. Last year I got three.
Update: I decided not to go. I need a break. I just let her know I had prior obligations today and apologized for not being able to come in. The amount of money I’d earn from the few hours worked is nominal and I finally have the opportunity to sleep during the day today.