It is common to observe large between- and within-herd variation in calving personnel performance (CPP) and turnover (TO). The objectives were to assess (1) the association of self-reported conflicts (e.g., lack of communication) on knowledge, skills, and performance of personnel; and (2) the association of CPP and TO on stillbirth and economics. A total of 70 personnel (18 dairy herds and approximately 18,100 cows) who participated in a 2 yr calving training program designed to improve calving management practices and reduce stillbirth were assessed. The educational content was delivered through oral presentation with group discussion and demonstration with supervised practice (skills). Pre- and post-tests of knowledge were used to assess knowledge gain. Participants evaluated the program and provided qualitative feedback about their working environment. Data were analyzed using GLIMMIX. Unresolved conflicts was significantly associated (P < 0.05) with personnel performance (determined by proportion of stillbirth) regardless of any differences in knowledge and skills. For the economic simulation, CPP (determined by compliance with calving protocol) was set to either 85% or 95%. Calf loss (stillbirth) was set at 1 preventable death due to late or no intervention at calving, assuming 18% of births need assistance. The overall risk performance percentage (RP) was estimated taking into account the CCP and TO. Costs were set at $280/head for calf loss, $1,000 for herd audit, and $1,000 for training (4 sessions/yr). For a 2,000-cow herd, calf losses were higher ($43,490 or $21 per cow/yr) for RP 85% with 30% TO (166 calves lost/yr) compared with RP 95% with 5% TO (19 calves lost/yr). The return on investment (ROI) for high performance teams (RP 95% and TO 5%) was $21 for every $1 invested (herd audit and training). The estimated ROI assumes that facilities are adequate, participants are willing to learn and apply newly learned concepts, and the herd audit correctly identifies and addresses the needs with the appropriate training program. Unresolved conflicts (interpersonal issues) within herd are associated with both TO and CPP, which in turns compromise the welfare of cows and calves around parturition.