The cleaner worked from 7am to 3pm, seven days a week, for a year at a hawker centre in Toa Payoh.
Almost every day, he worked overtime for three hours.
This earned him just under $1,000 a month.
At the start of the year, 56-year-old Yeo Puay Huat received a pay rise of $100 for his good performance.
This was given before the National Wage Council (NWC) announced its latest recommendation on Friday of a $60 pay rise for low-wage workers for this year.
Last year, it recommended a $50 pay rise.
Mr Yeo said that his $100 pay rise would be helpful for his daily expenses. His wife sells newspapers. They have no children.
"I am very happy with the extra $100 because I can buy more things like cooking oil and rice."