In SQ one can go up from being a stewardess/steward to a leading stewardess/steward (LSs or LS) then to be a chief(CS or CSS) and an inflight supervisor(IFS or IFSs).From IFS one could be a CTS or check training supervisor or inflight auditor (dual function).The difference in pay( Basic)between a FSS and an IFSs could be anywhere between $1,500 to $2,000 a month. The total difference in terms of allowances,basic,bonuses etc could average $3,000 to $4,000 a month.In other words, an IFSs could take home about $7,000 and a FSS $3,500 per month. So which idiot would not want to be promoted?
A graduate cabin crew executive with a 2nd upper honours starts with about $3,500. An "O" level fss/fs starts with with the same salary (inclusive of all sorts of allowances). No wonder so many wanna join SQ as a cabin crew.
To go up to the first level of promotion from a fss/fs to lss/ls it would take about 5 years. There were times when there was a severe shortage of cabin crew and coupled with rapid expansion, it took about 3 years to be promoted to lss/ls. In the early 1970s,a crew serving 3 to 6 months had been promoted. I remember a steward by the name of C. Heng and B.T.Ho were promoted to ls rank before even being confirmed in their position as a fs.
There were crew at other period were not promoted to ls even after working for 10 years. This case happened to guys more often than girls.
For a cabin crew to reach the position of an IFS,it would take about 15 years.
Nowadays,there is almost zero chance of any crew holding an "O" level education can make it to the CCE rank. This position is for 2nd upper and higher only. Although a CCE starts with a $3,500 salary ( per month)their prospects of being a manager is good. A junior manager probably gets a salary of around $7,000 to $10,000. A senior manager gets around $12,000 depending on length of service and the number of merit increaments they obtained each year. SVP would score anything from $20,000 to $40,000 a month.
PS: the above salary figures are from my own assessment and may not be necessarily accurate. Managers and more senior staff salaries are kept confidential.