US companies boosted payrolls in April by the most in over a year, the latest evidence of stabilisation in the labour market. Private-sector payrolls rose 109,000 in April after a revised 61,000 advance in the prior month, according to ADP Research data out on Wednesday. The median estimate in a Bloomberg survey of economists called for a 120,000 increase. More than half of the hiring advance was due to health services and education. Trade, transport and utilities payrolls also increased....