"The Guards have a Top Coat served out once a year" - Railway clothing 1848

Railway employee's working clothes in the Victorian period were usually provided by the company. However, because this was an expense for the companies, they were usually very precise in how much they provided to their employees, as demonstrated by these regulations from the Great Western Railway's rule book of 1848:

[1] The National Archives, RAIL 1134/148, General Instructions to Superintendents, Clerks, Guards, Policemen, Porters &c. &c. -1848