So effort should be based on how much you feel you should be paid for the job?
No but compensation should be a reflection of risk, demand, and factors invested in delivering a specialty service.
The higher the demand, the higher the pay.
The higher the risk, the higher the pay.
The higher the specialization / training / materials / intellectual investment, the higher the pay.
Conversely...
the lower the pay, the lower the demand (i.e. you wont have the creme de la creme lining up, and the lower importance put on aspects of the job).
the lower the pay, the less risk is taken on.
the lower the pay, the less materials, training, and intellectual investment.
Take is as less "effort". As compensation / money / credit is an abstract representation of "effort / work", if you give little, you get back little in return.
$10 / hr is $16.5k per anum. Call it $14k after tax. That's a so so 1 bedroom apartment in the city with $2k left over for food, transportation, and forget about a life. So why would a guard risk his life for your posh toy in the garage?
Hell he probably despises you for it!
In the end there are 3 types who become security guards for that kind of pay:
1) dead beat failures
2) students who utilize the downtime for study and see the job as an interim step.
3) immigrants who are augmenting their qualifications and can't wait to move onto to a job as a doctor in line with their previous job in whatever country they came from and the already 7 years of study they invested.
Why would any of them give a toss about your / my operpriced luxury vehicle or toy?