a4251e4a_es_Online___225___Pensions_Act__Second_column
[First column] 2. Below 10 years service in a non-pensionable office or a pensionable office on a temporary month-to-month basis [Second column] 
A gratuity equal to one-half (1/2) of one-tenth (1/10th) of a month’s salary for each complete month of service, if the officer retired on the ground of ill-health or on account of age limit or, if the officer was holding a non-pensionable office, on account of the abolition of any office in or re-organisation of the department to which he was attached to effect greater efficiency or economy.
Singapore Statutes Online - 225 - Pensions Act
Second column