After emigrating to Canada he worked for the British Columbia provincial government and chaired the Civil Service Reform committee.
[2] After employment in Derbyshire and Nottinghamshire he returned to the railway's new statistics office and quickly became recognised as a skilled statistician.
[4] Cotsworth married Kezia Gardiner, on 25 September 1884, at the St Saviourgate Unitarian Chapel, in York.
They had six children, Edith who died in infancy, Daisy, Grace, Lena (founder of the York House School, Vancouver), Frank and Olive.
[citation needed] Cotsworth's interest in calendar reform began around 1894 when he was working at the North Eastern Railway (United Kingdom).
[8] In 1912, he founded the International Almanak Reform League with Sir Sandford Fleming as honorary president.
[9] In 1925 Cotsworth met American entrepreneur George Eastman (1854 - 1932) who supported the plan and became its financial backer until his death.
[10] His publicity campaign was rewarded by an international conference on calendar reform at the League of Nations in October 1931.
He had helped to found a trade union to argue for workers' pensions and better conditions but, as a result, was sacked by his employer.
While in British Columbia he met Premier Richard McBride and William John Bowser and was appointed to the chair of the provincial civil service regrading commission.
In 1915 Cotsworth, with the help of the Ministerial Union of the Lower Mainland of B.C., published a damning critique of the administration in a pamphlet called The Crisis in B.C.