Previous Jobs:

Age: 19
Job Title : Account Trainee
Job Description : Basically a trainee in accounting firm, do everything instructed by boss eg. preparing P&L, tax computation & even non-related jobs like fix PC problems for free
Years spent in company : 3 months
Company : *********
Industry : Acc. Firm
Tenure : Probation 3 Months
Experience before joining : zero (fresh ACCA Part 1 graduate)
Salary : RM 600
Employee Benefits : Hourly RM2 OT Premium After 5.30pm, RM30 transport allowance
Working hours: 8.30am - 5.30pm, Six day per week. (OT can be until 11pm)
Reason to quit: Simply boring and tiring job and really not suitable for me, the pay is not even enough to cover my family expenses, no increment after probation period as promised and no EPF submission by boss, simply a blood sucker 

Age: 19
Job Title : Tutor
Job Description : Teaching computer class for office applications, internet, hardware troubleshooting etc & also tuition classes up to Form 3
Years spent in company : 7 months
Company : *********
Industry : Small Institution
Tenure : Contract Basis
Experience before joining : was a stupid acc trainee as described above
Salary : Hourly Rate varies from RM25 to RM120, average RM2500 per month
Employee Benefits : Can say none
Working hours: Depends on class schedule, can be 10 hours per day during weekend
Reason to quit: Company hired 2 degree holders to replace me once I started to earn over RM4000 a month. 

Age: 20
Job Title : Branch Manager
Job Description : Manage 2 branches of a computer trading business
Years spent in company : 12 months
Company : *********
Industry : Trading
Tenure : Employment Basis
Experience before joining : was a tutor as described above
Salary : Probation RM1800, After confirmation RM2500
Employee Benefits : Transport Allowance RM300
Working hours: Six Day per week from 10am to 6pm, OT no allowance
Reason to quit: Had better prospective to start my own business already. 

Since then self-employed for 3 years+ with more freedom (mother is sick got to take care of her) and higher income, basically do everything related to trading.
Might go for study again if got good opportunity to explore for example working offshore with 5 digits pay.

Basically I care more about how much you could save rather than how much you can earn. Be aware that some jobs might provide a good pay but at the same time you got to spend a lot to entertain clients at your own cost
Nevertheless, some jobs seems "low pay" but as long as you can grab the opportunities to learn and know more people, the "kangtau" will be always there, the side income can be much more than the basic pay