In 1938, a Schedule of Reserved Occupations' gave exemption from conscription to skilled workers in certain jobs. Around 5 million men of conscription age stayed at home and worked , including railway and dock workers, and farmers. Schoolteachers and doctors were also included. Workers in engineering industries were also exempted from conscription, as were those who worked as wardens in the ARP. Coalmining was not a reserved occupation but was later added.