Most junior office workers decide to improve their English but give up after a while, a straw poll suggests.

Junior office workers, who accounted for 73 percent of English program participants, often stop studying soon after they start. Only 27 percent last more than three months, while the majority stopped after about a month.

E4u Telephone English, a subsidiary of YBM sisa.com, arrived at the figures by analyzing the study habits of 12,582 office workers who subscribed to the site.

But the higher the rank, the more tenacious the workers were. Thirty-three percent of middle managers continued studying English for more than three months, as well as 80 percent of senior managers and 100 percent of executives.

More office workers preferred to study in the evening. In 2008, 35 percent studied English in the morning and 20 percent at night, but now the proportion is 50 percent for evenings and a mere 20 percent for mornings.