Roller-coaster operators and lemonade slingers at Kennywood amusement park, a Pittsburgh summer staple, won’t have to buy their own uniforms this year. Those with a high school diploma will also earn $13 as a starting wage — up from $9 last year — and new hires are receiving free season passes for themselves and their families.The big pop in pay and perks for Kennywood’s seasonal work force, where nearly half of employees are under 18, echoes what is happening around the country as employers scramble to hire waiters, receptionists and other service workers to satisfy surging demand as the economy reopens.For …
