Maintain a single sheet with rows from both rosters, deduplicated by name and city. Add a credentialSource column (HFES, BCPE, both) and a credentialList column (CPE, AEP, HFES-Professional, CHFP) that captures all credentials held. The single sheet feeds one /ergonomists/{slug}/ page group, with mappings rendering credential badges from the columns.

CPE (Certified Professional Ergonomist) is the senior BCPE credential requiring a graduate degree, work experience, and a passed exam. AEP (Associate Ergonomics Professional) is the entry credential with fewer requirements. The directory should clearly differentiate them via tag mapping because buyers screening for high-stakes work (litigation support, plant-wide assessments) usually require CPE.

Store industries as an array (automotive, manufacturing, warehouse, distribution, healthcare, hospital, tech-office, call-center, retail, food-processing) and use a list mapping to render filterable chips. Add a secondary page group at /ergonomists/{industry}/ for per-industry pages. Warehouse and distribution have grown rapidly as a category since Amazon scaled out, so flagging this clearly captures meaningful search volume.

Yes. Add 'home-office' to the industries array and 'remote-assessment' to services. The pandemic accelerated home-office assessment as a service category, with insurance carriers and large employers buying it in bulk. Ergonomists who offer virtual home-office assessment get a meaningful conversion lift from being filterable by that service.

Store litigationSupport as a boolean column and OSHA compliance as an entry in the services array. Use a tag mapping for the litigation badge and a list mapping for services. Ergonomists who offer litigation support command higher rates (1,000 to 5,000 dollars per day for expert witness work), so flagging this surfaces the high-revenue subset of the roster.

Yes. Add a carrierAffiliations array column (Liberty Mutual, Travelers, Zurich, Hartford, AmTrust) and use a list mapping to render carrier badges. Insurance carriers list partner ergonomists with whom they have pre-negotiated rates, and surfacing the carrier affiliation drives meaningful conversion improvements when claims adjusters are doing the referring.

Surgical ergonomics (operating room workflow), musician ergonomics (orchestra and conservatory work), and dental ergonomics are growing niches. Add specialty values to the specialties array and a niche tag column for the rare specialties. Search volume is lower but conversion intent is extremely high because there are very few certified pros in each niche.

SleekRank pricing is per site, not per generated page. The performance limit is WordPress and the database. Item caching keeps render fast at 1,500 rows, and standard managed WordPress hosting handles it without issue. The directory ROI is high in this category because individual engagements range from 5,000 to 100,000 dollars and the consultant pool is small enough that being the canonical search result captures significant inbound volume.